Latest Science and Technology General Knowledge(GK) Questions and answers

1 .

Which of the following causes fly ash?

A)

Nuclear Power Plant

B)

Tidal Power Plant

C)

Hydroelectric Power Station

D)

Coal Combustion Power Plant

Correct Answer : Coal Combustion Power Plant

Fly ash is a particulate material produced from the combustion of coal in thermal power plants.

2 .

Growth in production (in percent) of which one of the following core industries in India during the period 2015-2016 was negative?

A)

Natural gas

B)

Fertilizer

C)

Coal

D)

Refinery products

Correct Answer : Natural gas

The Natural Gas production(weight: 1.71 %) decreased by 4.5 % in June 2016 over June 2015. Its cumulative index during April to June 2016-17 declined by 6.1 % over the corresponding period of previous year.Refinery Products (93% of Crude Throughput)

Fertilizer production(weight: 1.25%)increased by 9.8 % in June 2016 over June 2015. Its cumulative index during April to June 2016-17 increased by 11.0 % over the corresponding period of previous year.

Coal production (weight: 4.38 %) increased by 12.0 % in June 2016 over June 2015. Its cumulative index during April to June 2016-17 increased by 5.4% over corresponding period of previous year.Natural Gas

Petroleum Refinery production(weight: 5.94%) increased by 3.5 % in June 2016 over June 2015. Its cumulative index during April to June 2016-17 increased by 7.1 % over the corresponding period of previous year.Fertilizers

3 .

Red rot is a disease caused to which of the following plant?

A)

Mustard

B)

Sugarcane

C)

Wheat

D)

Paddy

Correct Answer : Sugarcane

Red rot is one of the major constraints in the profitable cultivation of sugarcane. Red rot disease is caused by the fungus Glomerella tucumanensis.

4 .

Helium is added to the oxygen supply of deep sea divers because it is

A)

Lighter than nitrogen

B)

Less poisonous than nitrogen

C)

Less soluble in blood than nitrogen at high pressure

D)

Readily miscible with oxygen

Correct Answer : less soluble in blood than nitrogen at high pressure

5 .

Which of the following gas contributes the maximum to the phenomena of global warming?

A)

Nitrogen dioxide

B)

Carbon dioxide

C)

Chlorofluorocarbon (CFC)

D)

Methane

Correct Answer : Carbon dioxide

Carbon dioxide is the gas that contributes maximum to the phenomena of global warming.

6 .

The process of producing energy in plants is known as

A)

Transpiration

B)

Absorption

C)

Reduction

D)

Photosynthesis

Correct Answer : Photosynthesis

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

7 .

Bambusa dendrocalmus is the scientific name of

A)

Bamboo

B)

Banyan

C)

Papaya

D)

Pomegranate

Correct Answer : Bamboo

Dendrocalamus is a tropical Asian genus of giant clumping bamboos in the grass family. It is found in the Indian subcontinent, China, and Southeast Asia. Dendrocalamus giganteus is one of the tallest of bamboos, capable of reaching heights up to 46 m.

8 .

Which of the following is the treatment of water pollution?

A)

Venturi scrubber

B)

Bag house filter

C)

Windrow composting

D)

Reverse Osmosis

Correct Answer : Reverse Osmosis

9 .

Natural rubber is a polymer of

A)

Propene

B)

Phenol

C)

Isoprene

D)

Formaldehyde

Correct Answer : Isoprene

Natural rubber is an addition polymer that is obtained as a milky white fluid known as latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene), which is a conjugated diene hydrocarbon as mentioned above.

10 .

Fuse wire is made of

A)

Alloy of lead and zinc

B)

Alloy of lead and tin

C)

Pure lead

D)

Pure zinc

Correct Answer : Alloy of lead and tin

Fuse wire is made of alloy of lead and tin having low melting point of 200°C. ... Electric fuse is a safety device used to limit the current in an electric circuit which melts and breaks the circuit Whenever there is an excess flow of current in a circuit and it is the purpose.