Civil Engineering Building Materials Quiz (or) MCQ

1 .

Stainless steel contains____

A)

8% of chromium and 18% of nickel

B)

12% of chromium and 36% of nickel

C)

18% of chromuim and 8% nickel

D)

36% of chromium and 12% of nickel.

Correct Answer : 18% of chromuim and 8% nickel

2 .

What are building materials?

A)

Substance that is utilised in the construction of a structure

B)

Substance that is utilised in the manufacturing of construction materials

C)

Substance that which cannot be utilised in the construction of a structure

D)

None of the above

Correct Answer : Substance that is utilised in the construction of a structure

Explanation : The term “building material” refers to any substance that is utilised in the construction of a structure. Many naturally existing materials have been used to construct buildings, including clay, pebbles, sand, and wood, as well as twigs and leaves.

3 .

Which of the following is/are basic building materials?

A)

Brick

B)

Cement

C)

Wood

D)

All of the above

Correct Answer : All of the above

Explanation : The most basic types of building materials used in construction include wood, cement, aggregates, metals, bricks, concrete, and clay. These were chosen for their cost-effectiveness in construction projects.

4 .

In a mortar, the binding material is______

A)

sand

B)

cement

C)

cinder

D)

surkhi

Correct Answer : cement

Explanation : A mortar is a mixture of binding material, water, and fine aggregate (such as sand or surkhi). The binding material is typically cement, which is a powder made of a mixture of calcined limestone and clay. When mixed with water, cement forms a paste that hardens over time to bind the aggregate together and create a strong and durable building material. Sand and surkhi are both types of fine aggregate that are often used in mortars, and cinder is a type of coarse aggregate that is not typically used in mortars.

5 .

Ultimate strength to cement is provided by

A)

Tri-calcium aluminate

B)

Di-calcium silicate

C)

Tricalcium silicate

D)

Tetra calcium alumino ferrite.

Correct Answer : Di-calcium silicate

Explanation : Di-calcium Silicate (C2S) : This compound will undergo reaction slowly. It is responsible for the ultimate strength of concrete. This is also called as Belite. The heat of hydration is 260 J/Cal. Its proportion is 25 - 40%.

6 .

Which of the following is/are the classification of building materials?

A)

Binders

B)

Waterproofing compounds

C)

Both (A) and (B)

D)

Inorganic materials and Organic materials

Correct Answer : Inorganic materials and Organic materials

Explanation : Building materials may be classified as inorganic and organic building materials.

7 .

Which of the following is not a type of Inorganic building materials?

A)

Wood

B)

Mud

C)

Lime

D)

Gypsum

Correct Answer : Wood

Explanation : Inorganic materials consists of mud, cement, lime, gypsum, and steel where as organic materials such as wood and biomass.

8 .

Why building materials are required?

A)

Building material signifies structural existence

B)

Building material signifies bonding between the construction materials

C)

Both (A) and (B)

D)

All of the above

Correct Answer : Building material signifies structural existence

Explanation : The existence of a structure is denoted by the material used to construct it. It displays the presence of aesthetic sense in a design and, as a result, determines the structure’s practicability. It aids in the establishment of a link between architectural visual quality and structural stability.

9 .

Gypsum consists of______

A)

Hâ‚‚S and COâ‚‚

B)

Lime and Hâ‚‚O

C)

CaSOâ‚„ and Hâ‚‚O

D)

COâ‚‚ and calcium

Correct Answer : CaSOâ‚„ and Hâ‚‚O

10 .

The most important constituent of an oil paint, is_____

A)

Thinner

B)

Pigment

C)

Vehicle

D)

All of the above

Correct Answer : All of the above

11 .

Sand stone is_____

A)

igneous rock

B)

sedimentary rock

C)

volcanic rock.

D)

metamorphic rock

Correct Answer : sedimentary rock

12 .

Wrought iron contains carbon about

A)

0.1% to 0.25%

B)

0.5% to 1.75%

C)

1.5% to 5.5%

D)

None of the above

Correct Answer : 0.1% to 0.25%

13 .

Which one of the following is acid resistant asbestos:

A)

amosite asbestos

B)

anthophylite asbestos

C)

actinolite asbestos

D)

All of the above

Correct Answer : All of the above

Explanation : The acid resistant asbestos :

* amosite asbestos
* anthophylite asbestos
* actinolite asbestos
* crocidolite asbestos

14 .

Good quality stones must_____

A)

be durable

B)

be free from clay

C)

resist action of acids

D)

All of the above

Correct Answer : All of the above

15 .

Which of the following line is usually parallel to the plot boundaries and laid down in each case by the Authority, beyond which nothing can be constructed towards the site boundaries?

A)

Plot line

B)

Control line

C)

Building line

D)

Property line

Correct Answer : Building line

Explanation : Building line or Set-back is provided to avoid traffic congestion in front of the building. Buildings like mall, multi-complexes, factories, etc. which attract a large number of vehicles, should have be set-back a further distance apart from the building line. This line after this extra margin is called as Control Line.

16 .

Which of the following building material have high Seismic resistance and flexibility of nailed joints.

A)

Ply

B)

Timber

C)

Husk

D)

Bamboo

Correct Answer : Timber

Explanation : As long has materials and workmanship are of good quality, timber structures can perform very well in an earthquake. A wooden frame is usually considered to have medium to low vulnerability towards earthquake.

17 .

For filling cracks in masonry structures, the type of bitumen used, is

A)

plastic bitumen.

B)

blown bitumen

C)

bitumen-emulsion

D)

cut-back bitumen

Correct Answer : plastic bitumen.

18 .

The commonly used colour pigment in paints, is

A)

ambers

B)

iron oxide

C)

carbon black

D)

All of the above

Correct Answer : All of the above

Explanation : The commonly used colour pigment in paints, is :

* ambers

* carbon black

* iron oxide

* lamp black

19 .

Lacquer paints ________

A)

contain alcohol as thinner

B)

consist of resin and nitro-cellulose

C)

are generally applied on structural steel

D)

All of the above

Correct Answer : All of the above

Explanation : Lacquer paints are generally applied on structural steel, are less durable as compared to enamel paints, consist of resin and nitro-cellulose, and contain alcohol as thinner. Lacquer paints are known for their fast-drying properties, high gloss finish, and ability to be applied in thin layers.

They are often used on wood, metal, and other surfaces to provide a decorative finish. However, they are less durable than enamel paints, which are more resistant to wear and tear and tend to last longer.

Lacquer paints consist of a resin (such as nitrocellulose, acrylic, or polyurethane) suspended in a solvent (such as alcohol or acetone). The solvent helps the paint flow smoothly and evaporates quickly, leaving behind the resin to form a hard and glossy finish.

20 .

Elastomers can extend upto

A)

three times their original dimensions.

B)

five times their original dimensions

C)

ten times their original dimensions

D)

seven times their original dimensions

Correct Answer : ten times their original dimensions

Explanation : Elastomers are a type of polymer that are known for their ability to stretch and deform under stress and then return to their original shape when the stress is removed.

This property, called elasticity, is what gives elastomers their name. Elastomers can stretch to great lengths, often up to ten times their original dimensions, without breaking or permanently deforming. This makes them useful in a variety of applications, such as seals, gaskets, and shock absorbers, where a flexible and durable material is needed.

21 .

The initial setting time of lime-pozzolana, is_____

A)

30 minutes

B)

60 minutes

C)

90 minutes

D)

120 minutes

Correct Answer : 120 minutes

22 .

If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called_____

A)

Mottled pig.

B)

White or forge pig

C)

Bessemer pig

D)

Grey or foundry pig

Correct Answer : White or forge pig

23 .

Construction of cavity walls as external walls to protect the building from the outside heat or cold as the hollow space between two walls act as an ________

A)

Insulating material

B)

Burning material

C)

Building material

D)

Destructive material

Correct Answer : Insulating material

Explanation : Properly insulated building cuts down the cost of electric burning in summer as well as in winter. Cavity walls are one of the types of thermal insulation which consists of two walls with cavity in between them.

24 .

The main constituent of fly-ash, is_______

A)

silica

B)

ferrous oxide

C)

aluminium oxide

D)

All of the above

Correct Answer : All of the above

25 .

Due to attack of dry rot, the timber

A)

shrinks

B)

cracks

C)

reduces to powder

D)

None of the above

Correct Answer : reduces to powder

26 .

Which of the following type of foundation is used for the construction of building on black cotton soil?

A)

Mat foundation

B)

Grillage foundation

C)

Floating foundation

D)

Inverted arch foundation

Correct Answer : Mat foundation

Explanation : Black cotton soil is clay or loose type of soil and is considerably swells and shrinks by variation in moisture content. The variation in the volume of the soil is to the extent of 20 to 30% of the original volume.

Hence, Raft Foundation or Mat Foundation plays important role in uniform distribution of a load of structure over black cotton soil.

27 .

Sewer pipes are made of______

A)

terracota

B)

stone ware

C)

earthen ware

D)

refractory clay

Correct Answer : stone ware

28 .

Varnish is a transparent or semi-transparent solution of resinuous substances in

A)

alcohol

B)

linseed

C)

turpentine

D)

All of the above.

Correct Answer : All of the above.

29 .

Which organization specifies the distance between the wall ties placed in a cavity wall?

A)

Building Regulations of India

B)

Building Regulations of U.K.

C)

Building Regulations of China

D)

Building Regulations of Russia

Correct Answer : Building Regulations of U.K.

Explanation : Building Regulations of U.K. specifies that the wall ties should be placed at distances apart not exceeding 450 mm vertically and 900 mm horizontally. There should be at least 5 ties per square meter of the wall.

30 .

Wrought iron contains carbon upto____

A)

0.25%

B)

1.0%

C)

1.5%

D)

2.0%.

Correct Answer : 0.25%

31 .

In the method of condensation polymerization __________.

A)

the reaction proceeds with an evolution of ammonia

B)

the reaction proceeds with an evolution of hydrogen chloride

C)

low-molecular substances are removed from the high molecular substance

D)

All of the above

Correct Answer : All of the above

32 .

Quartzite is a_______

A)

calcareous rock

B)

metamorphic rock

C)

silicious rock

D)

argillaceous rock

Correct Answer : silicious rock

33 .

Pick up the hypabyssal rock from the following :

A)

Basalt

B)

Granite

C)

Dolerite

D)

All of the above.

Correct Answer : Dolerite

34 .

Which of the following is not a type of composite masonry?

A)

Glass block masonry

B)

Brick composite masonry

C)

Stone composite masonry

D)

Cement concrete masonry

Correct Answer : Brick composite masonry

Explanation : Composite masonry is the one that is constructed out of two or more than two types of building units or in which different types of building materials are used for construction.

It is of the following types – stone composite masonry, brick stone composite masonry, cement concrete masonry, hollow clay tile masonry, reinforced brick masonry, and glass block masonry.

35 .

The temporary framework is known as __________ and it is useful in construction demolition, maintenance or repair works.

A)

Scaffolding

B)

Shoring

C)

Grouting

D)

Underpinning

Correct Answer : Scaffolding

Explanation : When the height above floor level exceeds about 1.5 m a temporary structure, usually of timber, is erected close to the work to provide a safe working platform for the workers and to provide limited space for the storage of plant and building materials. This temporary Framework is known as scaffolding or simply of scaffold.

36 .

Which of the following is defined at the uppermost part of the building which is constructed in the form of a framework to give protection to the building against rain, heat, snow, wind, etc?

A)

Roof

B)

Truss

C)

Chajja

D)

Lintels

Correct Answer : Roof

Explanation : A roof basically consists of structural element provided at the top of building from the support of roof coverings. The structural element maybe trusses, portals, slabs, domes, etc. and the roof covering maybe AC sheets, GI sheets, etc.

37 .

The plastics made from cellulose resin

A)

are tough and strong

B)

are as clear as glass

C)

possess excellent electrical properties

D)

All of the above.

Correct Answer : All of the above.

38 .

For the manufacture of Portland cement, the proportions of raw materials used, are

A)

silica 70% ; lime 20% ; other ingredients 10%.

B)

lime 22% ; silica 63% ; other ingredients 15%

C)

lime 63% ; silica 22% ; other ingredients 15%

D)

silica 40% ; lime 40% ; other ingredients 20%

Correct Answer : lime 63% ; silica 22% ; other ingredients 15%

39 .

For preparing porcelains, the clay should be_______

A)

sufficiently pure

B)

of good plasticity

C)

of high degree of tanacity

D)

All of the above.

Correct Answer : All of the above.

40 .

The variety of pig iron used for the manufacture of steel by Bessemer process, is

A)

Grey pig

B)

Bessemer pig

C)

Mottled pig

D)

White forge pig

Correct Answer : Bessemer pig

41 .

For melting one tonne of cast iron_______

A)

20 kg limestone is required

B)

700 mÂ³ air is required

C)

one quintal coke is required

D)

All of the above.

Correct Answer : All of the above.

42 .

The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as____

A)

Crucible process

B)

Bessemer process

C)

Cementation process

D)

Open hearth process.

Correct Answer : Crucible process

43 .

In the cement the compound quickest to react with water, is

A)

Dicalcium silicate

B)

Tricalcium silicate

C)

Tricalcium aluminate

D)

Tetra-calcium alumino-ferrite

Correct Answer : Tricalcium aluminate

44 .

Which of the following hazard is concerned with the damage or destruction of the building itself?

A)

Building hazard

B)

Personal hazard

C)

Internal hazard

D)

Surrounding hazard

Correct Answer : Internal hazard

Explanation : Internal Hazard concerns damage or destruction of the building itself and it is directly related to the fire load which, in turn, enables the building to be graded when considered along with the duration of fire.

45 .

When the area to be enclosed is large, it becomes essential to provide the _________ construction so as to give stability to the cofferdam.

A)

Cellular cofferdam

B)

Double wall cofferdam

C)

Suspended cofferdam

D)

Single wall cofferdam

Correct Answer : Double wall cofferdam

Explanation : Double wall cofferdam was frequently used on the river Ohio in USA and hence, it derives its name as Ohio river type cofferdam. It is cheap and can be built up rapidly l. It is suitable for hard bed where there is no problem of erosion. This type of cofferdam is unsuitable for deep water.

46 .

Kaolin is chemically classified as _______

A)

silicious rock

B)

argillaceous rock

C)

calcareous rock

D)

metamorphic rock

Correct Answer : argillaceous rock

47 .

Asbestos cement _________

A)

is brittle

B)

warps due to changes in humidity

C)

strength is lowered when saturated by water

D)

All of the above.

Correct Answer : All of the above.

48 .

Polymerization helps to improve the property of _______

A)

rigidity

B)

strength

C)

elasticity

D)

All of the above

Correct Answer : All of the above

49 .

Which of the following term is used to indicate the art of building the structures in stones?

A)

Bond

B)

Brick

C)

Masonry

D)

Mortar

Correct Answer : Masonry

Explanation : The term Masonry is used to indicate the art of building the structures in either stone or bricks. The formal type is called the stone masonry and the latter type is called the brick masonry.

50 .

The rocks in which argil (or clay) predominates, are called______

A)

argillaceous rocks

B)

igneous rocks

C)

sillicious rocks

D)

calcareous rocks

Correct Answer : argillaceous rocks

51 .

A badly mixed cement concrete results in______

A)

bleeding

B)

honey combing

C)

segregation

D)

None of the above

Correct Answer : honey combing

52 .

The commonly used drying oil for oil paints, is _________

A)

linseed oil

B)

kerosine oil

C)

olive oil

D)

accetate of lead

Correct Answer : accetate of lead

53 .

Initial setting of cement is caused due to_____

A)

Tri-calcium aluminate

B)

Di-calcium silicate

C)

Tri-calcium silicate

D)

Tetra calcium alumino ferrite.

Correct Answer : Tri-calcium aluminate

54 .

Mastic asphalt is normally used for________

A)

water proofing

B)

fire proofing

C)

sound insulation

D)

None to the above

Correct Answer : water proofing

55 .

The size of modular bricks, is________

A)

19 x 9 x 9 cm

B)

10 x 10 x 9 cm

C)

22.5 x 8.0 x 9 cm

D)

22.5 x 10 x 8.5 cm

Correct Answer : 19 x 9 x 9 cm

56 .

A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called

A)

plank

B)

strip

C)

slate

D)

board

Correct Answer : strip

57 .

The size of mould for bricks, is generally kept_______

A)

10% larger than specified size

B)

equal to specified size

C)

a little small to specified size

D)

a little large to specified size

Correct Answer : a little large to specified size

58 .

Most commonly used solvent in oil paints, is_______

A)

spirit

B)

coaltar

C)

petroleum

D)

turpentine

Correct Answer : petroleum

59 .

The pigment used in paints for corrosive resistance, is_________

A)

gypsum

B)

white lead

C)

red lead

D)

ferrous oxide

Correct Answer : red lead

60 .

A well seasoned timber may contain moisture up to_____

A)

4 to 6%

B)

6 to 8%

C)

8 to 10%

D)

10 to 12%

Correct Answer : 10 to 12%

61 .

Pick up the correct statement regarding low heat cement from the following :

A)

Its final setting time is about 10 hours

B)

Its mainly used for mass concrete work

C)

It possesses less compressive strength

D)

All of the above

Correct Answer : All of the above

Explanation :

* It possesses less compressive strength

* Its initial setting time is about one hour

* Its final setting time is about 10 hours

* Its mainly used for mass concrete work

62 .

A bull nose brick is not used for_______

A)

arches

B)

pillars

C)

decoration purpose

D)

rounding off sharp corners

Correct Answer : arches

63 .

Red short iron cracks when bent due to the presence of____

A)

carbon

B)

sulphur

C)

silicon

D)

phosphorus

Correct Answer : sulphur

64 .

Linseed oil is used in paints as______

A)

base

B)

thinner

C)

drier

D)

vehicle

Correct Answer : drier

65 .

The foliated structure is very common in________

A)

igneous rocks

B)

sedimentary rocks

C)

metamorphic rocks

D)

None of the above

Correct Answer : metamorphic rocks

66 .

Acrylic sheets_____

A)

possess the light transmission rate of 93%

B)

are generally unaffected by most household detergents

C)

possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness

D)

All of the above

Correct Answer : All of the above

67 .

With storage, strength of cement_______

A)

increases

B)

decreases

C)

remains the same

D)

None of the above

Correct Answer : decreases

68 .

The stones obtained by blasting are used as______

A)

roadmetal

B)

ballast in railways

C)

aggregates for concrete

D)

All of the above

Correct Answer : All of the above

69 .

Oil varnish generally consists of_____

A)

resin, oil and turpentine

B)

oil, wax and resin

C)

spirit, oil and wax

D)

synthetic resin and spirit

Correct Answer : resin, oil and turpentine

70 .

The tendency of a stone is, to split along :

A)

texture

B)

fracture

C)

cleavage

D)

structure

Correct Answer : cleavage

71 .

Acrylic is the name of_____

A)

alkyd resin

B)

cellulose resin

C)

cumarone-indene

D)

methyl metha crylate

Correct Answer : methyl metha crylate

72 .

Pig iron is manufactured from the ores by_____

A)

smelting

B)

dressing

C)

calcination and roasting

D)

All of the above

Correct Answer : All of the above

73 .

The commonly used raw material in the manufacture of cement, is_______

A)

slate

B)

lime stone

C)

basalt

D)

sand stone

Correct Answer : lime stone

74 .

The hardest rock is________

A)

diamond

B)

talc

C)

marble

D)

quartz

Correct Answer : diamond

75 .

Plaster of Paris is obtained by calcining_________

A)

kankar

B)

bauxite

C)

gypsum

D)

lime stone

Correct Answer : gypsum

76 .

For high grade instruments the steel preferred to, is_______

A)

Mild steel

B)

Bessemer steel

C)

Cast steel

D)

Whitworth compressed steel

Correct Answer : Cast steel

77 .

Chemically, marble is known as_____

A)

silicious rock

B)

metamorphic rock

C)

argillaceous rock

D)

calcareous rock

Correct Answer : calcareous rock

78 .

Inner part of a timber log surrounding the pith, is called______

A)

sapwood

B)

heart wood

C)

cambium layer

D)

None of the above

Correct Answer : heart wood

79 .

The filler used in plastic bitumen, is________

A)

asbestos powder

B)

talc powder

C)

shale powder

D)

plastic powder

Correct Answer : asbestos powder

80 .

The rock generally used for roofing, is_______

A)

slate

B)

basalt

C)

pumice

D)

granite

Correct Answer : slate

81 .

If the ore impurities is______

A)

lime stone, clay is used as flux

B)

clay, lime stone is used as flux

C)

quartz, lime stone and argallaceous iron ores are used as flux

D)

All of the above

Correct Answer : All of the above

82 .

Fibre boards can be____

A)

painted

B)

used for furniture

C)

distempered

D)

painted and distempered

Correct Answer : used for furniture

83 .

The most commonly used base for timber painting, is____

A)

white lead

B)

red lead

C)

zinc white

D)

titanium white

Correct Answer : white lead

84 .

Lime stones are generally known as

A)

aqueous rocks

B)

stratified rocks

C)

sedimentary rocks

D)

All of the above

Correct Answer : All of the above

85 .

In which of the following type of construction, the square or rectangular blocks of stones are used?

A)

Rock Masonry

B)

Brick masonry

C)

Ashlar masonry

D)

Rubble masonry

Correct Answer : Ashlar masonry

Explanation : In Ashlar masonry, the height of stone various from 250 mm to 300 mm. The length of stone should not exceed 3 times the height and the depth into the wall should be at least equal to half the height.

86 .

Which of the following tools is used for cutting soft bricks?

A)

Scutch

B)

Trowel

C)

Jointer

D)

Spirit level

Correct Answer : Scutch

Explanation : Scutch is a tool that is used for cutting soft bricks. A trowel is used for laying the mortar. A jointer is used for pointing the joints while the spirit level is used for levelling.

87 .

Refractory bricks are used for______

A)

piers

B)

combustion chambers

C)

columns

D)

retaining walls

Correct Answer : combustion chambers

88 .

The plastics prepared from Vinyl resin are_______

A)

odourless

B)

non-toxic

C)

colourless

D)

All of the above

Correct Answer : All of the above

89 .

During smelting process, the combination of fuel in the furnace_____

A)

forms carbon dioxide

B)

carbon dioxide with carbon forms carbon mono-oxide

C)

carbon mono-oxide reacts with Feâ‚‚Oâ‚ƒ to form iron and liberates COâ‚‚

D)

All of the above

Correct Answer : All of the above

90 .

The rocks formed from molten magma, are called

A)

igneous rocks

B)

sedimentary rocks

C)

metamorphic rocks

D)

None of the above

Correct Answer : igneous rocks

91 .

Bitumen paints offer____

A)

hard surface

B)

smooth surface

C)

protective surface

D)

pleasing surface

Correct Answer : protective surface

92 .

Glazing of clay products, is done_____

A)

to improve their appearance

B)

to protect them from corrosive action

C)

to protect them from atmospheric effect

D)

All of the above

Correct Answer : All of the above

93 .

Lime mortar is generally made with_____

A)

fat lime

B)

hydraulic lime

C)

quick lime

D)

plain lime

Correct Answer : hydraulic lime

94 .

Duco paints are_______

A)

oil paints

B)

plastic paints

C)

emulsion paints

D)

cellulose paints

Correct Answer : oil paints

95 .

Steel contains carbon approximately_______

A)

0.25%

B)

1.50% to 5.6%

C)

0.05% to 1.75%

D)

None of the above

Correct Answer : 0.05% to 1.75%

96 .

Quick lime is a ________

A)

reacts with carbon dioxide

B)

may be used for white-washing

C)

generates heat when added to water

D)

All of the above

Correct Answer : All of the above

Explanation : Quick lime is a :
* reacts with carbon dioxide
* may be used for white-washing
* generates heat when added to water
* when mixed with water forms slaked lime

97 .

Plywood is obtained by gluing wooden sheets at______

A)

100 to 130Â°C

B)

100 to 150 N/cmÂ²

C)

Both (A) and (B)

D)

None of the above

Correct Answer : Both (A) and (B)

98 .

The portion of a brick cut to form angles other than right angles in plan, is known as____

A)

closer

B)

squint brick

C)

king closer

D)

queen closer

Correct Answer : squint brick

99 .

Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a____

A)

baulk

B)

deal

C)

cant

D)

strip

Correct Answer : baulk

100 .

Quick lime (or caustic lime)_____

A)

is amorphous

B)

has great affinity to moisture

C)

is obtained by the calcination of pure lime stone

D)

All of the above

Correct Answer : All of the above

101 .

The method of addition polymerization is used for obtaining:

A)

polystyrene

B)

polythylene

C)

polypropylene

D)

All of the above

Correct Answer : All of the above

102 .

Pegmatite is a/an_______

A)

sedimentary rock

B)

metamorphic rock

C)

intrusive igneous rock

D)

extrusive igneous rock

Correct Answer : intrusive igneous rock

103 .

Wrought iron is used for_______

A)

small sized water pipes

B)

columns and struts

C)

structural works in beams

D)

None of the above

Correct Answer : small sized water pipes

104 .

The timber having maximum resistance against white ants, is obtained from_____

A)

chir

B)

sal

C)

teak

D)

shisham

Correct Answer : sal

105 .

The lime which contains high percentage of calcium oxide, is generally called_____

A)

fat lime

B)

rich lime

C)

white lime

D)

All of the above

Correct Answer : All of the above

106 .

Plastic asphalt is

A)

a natural asphalt

B)

a refinery product

C)

a mixture of cement and asphalt

D)

used as a water proofing layer over roof

Correct Answer : a mixture of cement and asphalt

107 .

For obtaining vinyl chloride acetate, the method used, is_______

A)

co-polymerization

B)

addition polymerization

C)

condensation polymerization

D)

None of the above

Correct Answer : co-polymerization

108 .

The low voltage porcelain is mainly used for ________

A)

lamp sockets

B)

switch block

C)

insulating tubes

D)

All of the above

Correct Answer : All of the above

109 .

Putty is _____

A)

used for fixing glass panes

B)

made with finely powdered chalk and linseed oil

C)

softened by a solution of pearl ash and quick-lime soaked in water

D)

All of the above

Correct Answer : All of the above

110 .

Generally wooden moulds are made from________

A)

teak wood

B)

shisham wood

C)

ply wood

D)

deodar wood

Correct Answer : shisham wood

111 .

Black marble is generally found in the district of_______

A)

Jaipur

B)

Jabalpur

C)

Jodhpur

D)

Jaisalmer

Correct Answer : Jaipur

112 .

The percentage of alumina and silica in good fire clay vary respectively is______

A)

35, 65

B)

30, 70

C)

25, 75

D)

All of the above

Correct Answer : 25, 75

113 .

Lime concrete is generally used for

A)

wall foundations

B)

flooring at ground level

C)

Both (A) and (B)

D)

Neither (A) nor (B)

Correct Answer : flooring at ground level

114 .

The harmonious mixing of the clay ingredients, is known as

A)

tempering

B)

weathering

C)

blending

D)

None of the above

Correct Answer : blending

115 .

Brass is an alloy of

A)

zinc and lead

B)

zinc and nickel

C)

tin and silver

D)

copper and zinc

Correct Answer : copper and zinc

116 .

The cracks which extend from bark towards the sap wood in the cross section of a tree, are called

A)

star shakes

B)

cup shakes

C)

heart shakes

D)

radial shakes

Correct Answer : star shakes

117 .

Good quality cement contains higher percentage of

A)

Tricalcium silicate

B)

Di-calcium silicate

C)

Tri-calcium aluminate

D)

Tetra calcium alumino ferrite

Correct Answer : Tricalcium silicate

118 .

Soundness of cement is tested by______

A)

Vicat's apparatus

B)

Le-chatelier apparatus

C)

compressive strength testing apparatus

D)

None of the above

Correct Answer : Le-chatelier apparatus

119 .

Cement paints usually______

A)

contain hydrated lime

B)

are prepared with white cement

C)

contain 5% to 10% colour pigments

D)

All of the above

Correct Answer : All of the above

120 .

A volatile substance added to a paint to make its application easy and smooth, is known as____

A)

base

B)

vehicle

C)

solvent

D)

None of the above

Correct Answer : solvent

121 .

The kiln which may work throughout the year, is

A)

Clamp

B)

Bull's kiln

C)

Hoffman's kiln

D)

None of the above

Correct Answer : Hoffman's kiln

122 .

The most fire resistant paints are :

A)

asbestos paints

B)

enamel paints

C)

cement paints

D)

aluminium paints

Correct Answer : asbestos paints

123 .

If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is

A)

0.70 P

B)

0.75 P

C)

0.80 P

D)

0.85 P

Correct Answer : 0.85 P

124 .

The term frog means

A)

soaking brick in water

B)

a depression on a face of brick

C)

an apparatus to lift the stone

D)

vertical joint in a brick work

Correct Answer : a depression on a face of brick

125 .

Bituminous fells are used for

A)

D.P.C.

B)

covering A.C. sheets

C)

covering sloping roofs

D)

None to the above

Correct Answer : covering A.C. sheets

126 .

Rapid hardening cement attains early strength due to

A)

lesser proportion of lime grounded finer than normal cement

B)

larger proportien of lime grounded coarser than normal cement

C)

larger proportion of lime grounded finer than normal cement

D)

lesser proportion of lime grounded coarser than normal cement

Correct Answer : larger proportion of lime grounded finer than normal cement

127 .

Sea sand used in structures causes______

A)

dampness

B)

efflorescence

C)

disintegration

D)

All of the above

Correct Answer : All of the above

128 .

The PVC doors and windows are preferred as they are________

A)

rust proof

B)

termile proof

C)

water proof

D)

All of the above

Correct Answer : All of the above

129 .

Based on its dry weight, a freshly felled tree may contain water

A)

25%

B)

50%

C)

75%

D)

100%

Correct Answer : 100%

130 .

Forge pig may be converted to wrought iron by________

A)

pudding

B)

rolling

C)

refining

D)

shingling

Correct Answer : pudding

131 .

To give a brilliant finish, the type of varnish used, is

A)

oil varnish

B)

spirit varnish

C)

water varnish

D)

turpentine varnish

Correct Answer : spirit varnish

132 .

The softest rock is_______

A)

marble

B)

quartz

C)

talc

D)

diamond

Correct Answer : talc

133 .

A pug mill is used for

A)

moulding brick earth

B)

softening brick earth

C)

providing brick earth

D)

tempering brick earth

Correct Answer : tempering brick earth

134 .

A good brick earth should contain :

A)

about 5 to 6% of oxide of lime

B)

about 20% to 30% of alumina

C)

about 50% to 60% of silica

D)

All of the above

Correct Answer : All of the above

135 .

The commonly used lime in white washing, is

A)

lime

B)

fat lime

C)

white lime

D)

hydraulic lime

Correct Answer : fat lime

136 .

Pick up the plutonic rock from the following :

A)

Basalt

B)

Dolerite

C)

Granite

D)

All of the above

Correct Answer : Granite

137 .

Asphalt is obtained from

A)

petroleum distillation

B)

plastic distillation

C)

bitumen distillation

D)

None of the above

Correct Answer : petroleum distillation

138 .

To retard the initial setting time of cement, the compound responsible, is

A)

Gypsum

B)

Di-calcium silicate

C)

Tricalcium silicate

D)

Tri calcium aluminate

Correct Answer : Gypsum

139 .

Dorry's testing machine is used for_______

A)

impact test of stone

B)

hardness test of stone

C)

crushing test of stone

D)

water absorption test

Correct Answer : hardness test of stone

140 .

Stones used for rubble masonry must be

A)

soft

B)

light

C)

heavy

D)

hard

Correct Answer : hard

141 .

The minimum compressive strength of Ilnd class bricks should be

A)

75 kg/cmÂ²

B)

90 kg/cmÂ²

C)

100 kg/cmÂ²

D)

120 kg/cmÂ²

Correct Answer : 75 kg/cmÂ²

142 .

The colour of statuary marble used for sculptor's work, is_____

A)

blue

B)

red

C)

green

D)

white

Correct Answer : white

143 .

Second class bricks_____

A)

are well burnt

B)

are under burnt

C)

produce a metallic sound when struck

D)

are of dark brown colour

Correct Answer : produce a metallic sound when struck

144 .

Teak wood is suitable for

A)

sports articles

B)

furnitures

C)

railway sleepers

D)

All of the above

Correct Answer : furnitures

145 .

Refractory bricks resist

A)

dampness

B)

high temperature

C)

chemical action

D)

All of the above.

Correct Answer : high temperature

146 .

When a brick is immersed in water for 24 hours and then dried, if

A)

no grey or white deposits appear on the surface, the brick is free from soluble salts

B)

10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence

C)

50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence

D)

All of the above

Correct Answer : All of the above

147 .

Bitumen may be dissolved in_______

A)

carbon disulphide

B)

water

C)

carbondioxide

D)

sodium chloride

Correct Answer : carbon disulphide

148 .

Whitworth compressed steel is obtained when molten steel is subjected to a pressure of

A)

5 kg/mmÂ²

B)

9 kg/mmÂ²

C)

13 kg/mmÂ²

D)

15 kg/mmÂ²

Correct Answer : 9 kg/mmÂ²

149 .

Index number expressing the relative sizes of both coarse and fine aggregates, is called

A)

grading of aggregates

B)

proportioning of aggregates

C)

fineness modulus

D)

None of the above

Correct Answer : fineness modulus

150 .

Dolomite is a lime stone which contains carbonate of magnesia upto_______

A)

20%

B)

25%

C)

35%

D)

45%

Correct Answer : 45%

151 .

Stuco paints are suitable for

A)

brick walls

B)

stone masonry

C)

Both (A) and (B)

D)

Neither (A) nor (B)

Correct Answer : Both (A) and (B)

152 .

Quick setting cement is produced by adding

A)

aluminium sulphate in very fine powdered form

B)

pozzolana in very fine powdered form

C)

less amount of gypsum in very fine powdered form

D)

more amount of gypsum in very fine powdered form

Correct Answer : aluminium sulphate in very fine powdered form

153 .

Duco is one of the patent forms of _______

A)

plastic paints

B)

cellulose paints

C)

emulsion paints

D)

bituminous paints

Correct Answer : cellulose paints

154 .

Plywood is normally available_____

A)

1 mm thick

B)

2 mm thick

C)

2 to 3 mm thick

D)

3 mm to 4 mm thick

Correct Answer : 3 mm to 4 mm thick

155 .

In arches, stratified stones are placed so that their planes are______

A)

radial

B)

parallel

C)

perpendicular

D)

None of the above

Correct Answer : radial

156 .

The fire clay contains pure_____

A)

lime

B)

magnesium

C)

oxide of iron

D)

hydrated aluminium silicate

Correct Answer : hydrated aluminium silicate

157 .

Pick up the correct characteristic of Pyroxene from the following :

A)

Its density is 2.3 to 3.6 g/cmÂ²

B)

Its hardness is 5 to 6

C)

It converts to chlorine by hydration

D)

All of the above

Correct Answer : All of the above

Explanation :

* It forms octagonal crystals

* It converts to chlorine by hydration

* Its density is 2.3 to 3.6 g/cm²

* Its hardness is 5 to 6

158 .

Mild steel is used for________

A)

columns and struts

B)

small sized water pipes

C)

structural works in beams, joints and girders

D)

None of the above

Correct Answer : structural works in beams, joints and girders

159 .

The sequence of refractory materials according to increasing melting points is :

A)

Dolomite, Magnesia, Bauxite, Chromite

B)

Bauxite, Chromite, Dolomite, Magnesia

C)

Magnesia, Bauxite, Dolomite, Chromite

D)

None of the above

Correct Answer : Bauxite, Chromite, Dolomite, Magnesia

160 .

Veneering means_____

A)

chemically treating timber planks

B)

carving out designs on timber planks

C)

thick layer of superior wood glued to inferior wood

D)

thin layer of superior wood glued to inferior wood

Correct Answer : thick layer of superior wood glued to inferior wood

161 .

The percentage of water for normal consistency, is

A)

5% to 15%

B)

15% to 25%

C)

20% to 30%

D)

25% to 35%

Correct Answer : 25% to 35%

162 .

The main ingredient of a good quality brick earth, is

A)

alumina

B)

lime

C)

silica

D)

magnesia

Correct Answer : alumina

163 .

Bitumen is generally obtained from_____

A)

coal

B)

petroleum product

C)

organic material

D)

synthetic material

Correct Answer : petroleum product

164 .

For one cubic metre of brick masonry, number of bricks required, is_____

A)

400

B)

450

C)

500

D)

550

Correct Answer : 500

165 .

A wall may be defined as that component of a building, whose width is _________ times its thickness.

A)

2

B)

4

C)

6

D)

8

Correct Answer : 4

Explanation : A wall is a vital component of the building whose function is to divide the space of the building. Generally, the width of a wall exceeds four times its thickness. There are basically two types of walls – load bearing and non-load bearing walls.

166 .

Which of the following types of walls is constructed to divide the space within the building?

A)

Party wall

B)

Cavity wall

C)

Curtain wall

D)

Partition wall

Correct Answer : Partition wall

Explanation : A partition wall is defined as either load-bearing or non-load bearing internal wall whose function is to divide the space within the building so as to make the building more productive and useful. A cavity wall consists of two leaves. A party wall is used to separate adjacent buildings occupied by different people. A curtain wall does not carry any vertical loads.

167 .

The lime which contains mainly calcium oxide and slacks with water, is______

A)

quick lime

B)

fat lime

C)

poor lime

D)

hydraulic lime

Correct Answer : quick lime

168 .

Seasoning is______

A)

creosoting

B)

a process of removing sap

C)

coating with tar

D)

painting with sodium silicate

Correct Answer : a process of removing sap

169 .

The portion of the brick cut across its width and having its length equal to that of a full brick, is known as_____

A)

queen closer

B)

closer

C)

king closer

D)

prince closer

Correct Answer : queen closer

170 .

Bulking of sand is caused due to_______

A)

viscosity

B)

air voids

C)

clay contents

D)

surface moisture

Correct Answer : surface moisture

171 .

The normal curing period for lime mortar, is:

A)

1 day

B)

3 days

C)

7 days

D)

10 days

Correct Answer : 7 days

172 .

The type of steel used for precision levelling staff, is________

A)

Invar

B)

Carbon steel

C)

Titanium steel

D)

Stainless steel

Correct Answer : Invar

173 .

French polish is______

A)

distemper

B)

spirit varnish

C)

oil paint

D)

None of the above

Correct Answer : spirit varnish

174 .

For sanitary pipes and chemical stonewares,

A)

lead glazing is used

B)

salt glazing is used

C)

opaque glazing is used

D)

None of the above

Correct Answer : salt glazing is used

175 .

The steel used for rails under heavy traffic and on sharp curves, is _____

A)

Nickel steel

B)

Magnese steel

C)

Vanadium steel

D)

Chrome steel

Correct Answer : Chrome steel

176 .

The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick____

A)

20%

B)

15%

C)

10%

D)

5%

Correct Answer : 20%

177 .

The usual percentages of clay and metal in cermet are :

A)

60%, 40%

B)

70%, 30%

C)

80%, 20%

D)

50%, 50%

Correct Answer : 80%, 20%

178 .

The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called ________

A)

Volcanic rocks

B)

Ignoeous rocks

C)

Hypabyssal rocks

D)

Plutonic rocks

Correct Answer : Hypabyssal rocks

179 .

The thermosetting plastic

A)

charrs at 343Â°C

B)

becomes rigid when moulded at suitable pressure and temperature

C)

at 127Â°C to 177Â°C permanently set and further application of heat does not soften it

D)

All of the above

Correct Answer : All of the above

180 .

Laterite is a/an _____

A)

calcareous rock

B)

argillaceous rock

C)

volcanic rock

D)

silicious rock

Correct Answer : argillaceous rock

181 .

A stone is rejected if it absorbs water more than ____

A)

5%

B)

10%

C)

15%

D)

20%

Correct Answer : 10%

182 .

The most valuable timber may be obtained from _____

A)

teak

B)

sal

C)

chir

D)

shisham

Correct Answer : teak

183 .

Pick up the compound responsible for early strength of cement from the following :

A)

Dicalcium silicate

B)

Tricalcium aluminate

C)

Tricalcium silicate

D)

Tetra-calcium alumino-ferrite

Correct Answer : Tricalcium silicate

184 .

The steel which contains fissures and cavities, is manufactured by _______

A)

Bessemer process

B)

Crucible process

C)

Open hearth process

D)

Cementation process

Correct Answer : Cementation process

185 .

In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is ______

A)

45Â°

B)

60Â°

C)

right angles

D)

parallel

Correct Answer : right angles

186 .

Softer variety of steel may be obtained by

A)

crucible process

B)

Bessemer process

C)

Open hearth process

D)

Cementation process

Correct Answer : Bessemer process

187 .

Calcination of iron ores is done ______

A)

after dressing

B)

by roasting in heaps

C)

to remove carbonic acid

D)

All of the above

Correct Answer : All of the above

Explanation :

* after dressing

* by roasting in heaps

* to remove carbonic acid
* to remove moisture

188 .

Minimum required water cement ratio for a workable concrete, is

A)

0.40

B)

0.50

C)

0.60

D)

1.0

Correct Answer : 0.40

189 .

Rocks formed due to alteration of original structure due to heat and excessive pressure are called ______

A)

igneous rocks

B)

sedimentary rocks

C)

metamorphic rocks

D)

None of the above

Correct Answer : metamorphic rocks

190 .

For slaking of 10 kg of CaO, the theoretical amount of water is ______

A)

1.5 kg

B)

2.2 kg

C)

3.2 kg

D)

None of the above

Correct Answer : 3.2 kg

191 .

Seasoning of timber is done for _____

A)

increasing moisture content

B)

decreasing moisture content

C)

increasing strength of timber

D)

None to the above

Correct Answer : decreasing moisture content

192 .

According to ISI, bitumen is classified into _____

A)

4 grades

B)

6 grades

C)

8 grades

D)

10 grades

Correct Answer : 10 grades

193 .

The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is ____

A)

0

B)

5

C)

10

D)

15

Correct Answer : 0

194 .

German silver is an alloy of _____

A)

copper, nickel and zinc

B)

silver, gold and lead

C)

copper, brass and zinc

D)

brass, silver and zinc

Correct Answer : copper, nickel and zinc

195 .

Slacking of lime is affected by

A)

crushing the lime lumps

B)

keeping it exposed to air

C)

immersing the lime in water

D)

None of the above

Correct Answer : immersing the lime in water

196 .

Quartzite, a metamorphic stone is

A)

hard

B)

brittle

C)

crystalline

D)

All of the above

Correct Answer : All of the above

197 .

Dextrin is _____

A)

starch glue

B)

animal glue

C)

albumin glue

D)

rubber based adhesive

Correct Answer : rubber based adhesive

198 .

Formula for quick lime, is

A)

CaCOâ‚ƒ

B)

CaO

C)

COâ‚ƒCOâ‚‚

D)

None of the above

Correct Answer : CaO

199 .

The steel used in R.C.C. work is ______

A)

mild steel

B)

wrought iron

C)

stainless steel

D)

high carbon steel

Correct Answer : mild steel

200 .

Non acid-resistant asbestos is :

A)

amosite absestos

B)

tremolite asbestos

C)

chrysolite abestos

D)

None of the above

Correct Answer : chrysolite abestos

201 .

Strength of cement concrete primarily depends upon

A)

quantity of cement

B)

quality of water

C)

water-cement ratio

D)

quantity of aggregate

Correct Answer : water-cement ratio

202 .

Bitumen emulsion is _____

A)

a paint

B)

used as anti-corrosive paint

C)

a liquid containing bitumen in suspension

D)

All of the above

Correct Answer : All of the above

203 .

The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted to ________

A)

white cast iron

B)

mottled cast iron

C)

grey cast iron

D)

toughed cast iron

Correct Answer : mottled cast iron

204 .

Jhumb bricks are ______

A)

over burnt

B)

kutcha

C)

under burnt

D)

None of the above

Correct Answer : over burnt

205 .

Plastic bitumen is generally used for _______

A)

road pavements

B)

crack fillings

C)

expansion joints

D)

None to the above

Correct Answer : crack fillings

206 .

The commonly used thinner in oil paints, is _______

A)

naptha

B)

turpentine

C)

Both (A) and (B)

D)

Neither (A) nor (B)

Correct Answer : Both (A) and (B)

207 .

Clay and silt content in a good brick earth must be at least _____

A)

30%

B)

40%

C)

50%

D)

None of the above

Correct Answer : 50%

208 .

The portion of the brick without a triangular corner equal to half the width and half the length, is called _______

A)

closer

B)

squint brick

C)

queen closer

D)

king closer

Correct Answer : king closer

209 .

The standard size of masonry bricks, is_____

A)

19 cm x 9 cm x 9 cm

B)

20 cm x 10 cm x 10 cm

C)

21 cm x 11 cm x 11 cm

D)

None of the above

Correct Answer : 19 cm x 9 cm x 9 cm

210 .

A good quality stone absorbs water less than ______

A)

5%

B)

10%

C)

15%

D)

20%

Correct Answer : 5%

211 .

Plywood is made from ______

A)

bamboo fibre

B)

teak wood only

C)

common timber

D)

asbestos sheets

Correct Answer : teak wood only

212 .

For a 50 kg cement bag water required, is _____

A)

16.5 litres

B)

18.5 litres

C)

20.5 litres

D)

22.5 litres

Correct Answer : 22.5 litres

213 .

The presence of sand in brick earth prevents:

A)

cracking of bricks

B)

shrinkage of bricks

C)

warping of bricks

D)

None of the above

Correct Answer : warping of bricks

214 .

Percentage content of silica in window glass, is _______

A)

40 to 45

B)

50 to 55

C)

60 to 65

D)

70 to 75

Correct Answer : 70 to 75

215 .

The coefficient of hardness of stones used in road work should be greater than _____

A)

17

B)

15

C)

12

D)

10

Correct Answer : 17

216 .

The presence of original rounded surface on the manufactured piece of timber, is called ___

A)

Chipmark

B)

Wane

C)

Torn grain

D)

Diagonal grain

Correct Answer : Wane

217 .

Smith's test of stones is performed to find out ______

A)

the hardness of the stone

B)

the toughness of the stone

C)

the presence of soluble matter of stone

D)

the compressive strength of the stone

Correct Answer : the presence of soluble matter of stone

218 .

Stones used for the construction of retaining walls must be

A)

soft

B)

hard

C)

heavy

D)

light

Correct Answer : heavy

219 .

Permanent magnets are made of high carbon steel and ______

A)

15% of cobalt

B)

20% of cobalt

C)

35% of cobalt

D)

45% of cobalt

Correct Answer : 45% of cobalt

220 .

Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following :

A)

Alumina

B)

Lime

C)

Magnesia

D)

Ironoxide

Correct Answer : Alumina

221 .

Cast iron is used for ______

A)

small sized water pipes

B)

columns and struts

C)

structural works in beams

D)

None to the above

Correct Answer : columns and struts

222 .

Stainless steel resists corrosion due to ________

A)

chromium

B)

carbon

C)

sulphur

D)

vanadium

Correct Answer : chromium

223 .

Mastic asphalt is _______

A)

corrosive material

B)

acid resisting material

C)

non-corrosive material

D)

heating-resisting material

Correct Answer : non-corrosive material

224 .

Upto a maximum of 72% of iron, is available in _____

A)

Limonite

B)

Siderite

C)

Magnetite

D)

Red haemetite

Correct Answer : Magnetite

225 .

For lime concrete,

A)

slump is 50 to 75 mm

B)

flexural strength at 90 days is 0.2 N/mmÂ²

C)

compressive strength at 90 days is 1.5 N/mmÂ²

D)

All of the above

Correct Answer : All of the above

Explanation : * slump is 50 to 75 mm
* flexural strength at 90 days is 0.2 N/mm²
* compressive strength at 90 days is 1.5 N/mm²
* compressive strength at 26 days is 1.2 N/mm²

226 .

The material generally not used as extender in paints, is ______

A)

talc

B)

zinc white

C)

gypsum

D)

powdered silica

Correct Answer : zinc white

227 .

Pick up the non-inflammable plastic from the following:

A)

Polyvinyl chloride plastics

B)

Urea formaldehyde plastic

C)

Cellulose acetate plastics

D)

Phenol formaldehyde plastic

Correct Answer : Polyvinyl chloride plastics

228 .

For light and ornamental casting, the most unsuitable pig iron, is ________

A)

Mottled pig

B)

Bessemer pig

C)

White or forge pig

D)

Grey or foundry pig

Correct Answer : Mottled pig

229 .

In a rock calcium carbonate predominates. State whether it is :

A)

Sillicious rock

B)

Argillaceous rock

C)

Calcareous rock

D)

None of the above

Correct Answer : Calcareous rock

230 .

In order of increasing percentage of silica, the correct sequence is _________

A)

pure clay, sandy clay, calcareous clay

B)

calcareous clay, pure clay, sandy clay

C)

sandy clay, calcareous clay, pure clay

D)

None of the above

Correct Answer : calcareous clay, pure clay, sandy clay

231 .

The rocks which are formed due to pouring of magma at the earth's surface are called _____

A)

Igneous rocks

B)

Plutonic rocks

C)

Hypabyssal rocks

D)

Volcanic rocks

Correct Answer : Volcanic rocks

232 .

The slag which floats on the surface of the molten iron generally contains____

A)

Lime (CaO) 45%

B)

Silica (SiOâ‚‚) 35%

C)

Alumina (Alâ‚‚Oâ‚ƒ) 12%

D)

All of the above

Correct Answer : All of the above

Explanation :

* Lime (CaO) 45%

* Silica (SiOâ‚‚) 35%

* Alumina (Alâ‚‚Oâ‚ƒ) 12%

* MgO, CaSOâ‚„, KMnOâ‚‚ and FeO 8%

233 .

If the iron ore contains clay as an impurity, the flux added during calcination, is_____

A)

lime stone

B)

clay

C)

argillaceous iron ore

D)

All of the above

Correct Answer : lime stone

234 .

Cast steel is manufactured by_______

A)

Bessemer process

B)

Open hearth process

C)

Crucible process

D)

Cementation process

Correct Answer : Crucible process

235 .

The steel used for the manufacture of rails, is_____

A)

Bessemer steel

B)

mild steel

C)

cast steel

D)

stainless steel

Correct Answer : Bessemer steel

236 .

The frog of a brick is normally made on its______

A)

bottom face

B)

top face

C)

longer face

D)

shorter side

Correct Answer : top face

237 .

The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called :

A)

heart shakes

B)

wind cracks

C)

radial shakes

D)

twisted fibres

Correct Answer : wind cracks

238 .

Good quality sand is never obtained from____

A)

sea

B)

nala

C)

river

D)

gravel powder

Correct Answer : sea

239 .

Pick up the rock which is not a sedimentary rock from the following :

A)

gravel

B)

gypsum

C)

dolerite

D)

sand stone

Correct Answer : dolerite

240 .

For a good building stone, its specific gravity should the greater than_____

A)

1.5

B)

1.7

C)

2.2

D)

2.7

Correct Answer : 2.7

241 .

Seasoning of timber is essential to remove______

A)

sap from timber

B)

knots from timber

C)

roughness of timber

D)

twisted fibre from timber

Correct Answer : sap from timber

242 .

The melting point of silica is :

A)

1570Â°C

B)

1630Â°C

C)

1730Â°C

D)

1850Â°C

Correct Answer : 1730Â°C

243 .

Invar contains ______

A)

30% to nickel

B)

36% of nickel

C)

24% of nickel

D)

12% of nickel

Correct Answer : 36% of nickel

244 .

Based on flow quality, the sequence of pipes is ______

A)

C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes

B)

C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes

C)

A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes

D)

None of the above

Correct Answer : C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes

245 .

A ferrous metal is ____

A)

steel

B)

cast iron

C)

wrought iron

D)

All of the above

Correct Answer : All of the above

246 .

For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is _______

A)

80 : 13 : 7

B)

60 : 35 : 5

C)

70 : 20 : 10

D)

None of the above

Correct Answer : 80 : 13 : 7

247 .

Seasoning of timber is done _____

A)

to remove water

B)

to paint its surface

C)

to make it water proof

D)

to increase its temperature

Correct Answer : to remove water

248 .

The specific gravity of marble, is ______

A)

2.60

B)

2.66

C)

2.72

D)

3.00

Correct Answer : 2.72

249 .

The rocks having alumina or clay as their major constituents, are known as ____

A)

siliceous rocks

B)

argillaceous rocks

C)

calcareous rocks

D)

sedimentary rocks

Correct Answer : argillaceous rocks

250 .

In paints, the pigment is responsible for _______

A)

smoothness

B)

colour

C)

durability

D)

glassy face

Correct Answer : colour

251 .

The operation of removal of impurities or clay adhering to iron ores, is known as ______

A)

roasting

B)

smelting

C)

calcination

D)

dressing

Correct Answer : dressing

252 .

If water required for 1 bag of cement is 30 litres, the water cement ratio is :

A)

0.60

B)

0.50

C)

0.40

D)

None of the above

Correct Answer : 0.60

253 .

Which one of the following polymers is obtained from condensation polymerization?

A)

carbamide

B)

phenol formaldehyde

C)

melamine-formaldehyde

D)

All of the above

Correct Answer : All of the above

254 .

The weight of 1 mÂ³ of brick earth, is about____

A)

1200 kg

B)

1500 kg

C)

1800 kg

D)

2000 kg

Correct Answer : 1800 kg

255 .

Granite mainly composed of quartz and felsper particles, is obtained from _______

A)

metamorphic rocks

B)

igneous rocks

C)

sedimentary rocks

D)

All of the above

Correct Answer : igneous rocks

256 .

Pig iron obtained from the furnance which is properly provided with fuel at a very high temperature, is called

A)

Mottled pig

B)

Grey or foundry pig

C)

Bessemer pig

D)

White or forge pig

Correct Answer : Grey or foundry pig

257 .

Durability of building stone is affected by its _____

A)

texture

B)

chemical composition

C)

resistance to atmosphere

D)

All of the above

Correct Answer : All of the above

258 .

According to IS 399-1963, the weight of the timber is specified at ______

A)

12% moisture content

B)

14% moisture content

C)

8% moisture content

D)

10% moisture content

Correct Answer : 12% moisture content

259 .

A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than ____

A)

10%

B)

15%

C)

20%

D)

25%

Correct Answer : 20%

260 .

The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively :

A)

75, 10, 15

B)

10, 15, 75

C)

15, 75, 10

D)

10, 75, 15.

Correct Answer : 15, 75, 10