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.

Recently Updated in Building Materials Questions
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 : Option (C) :   15, 75, 10

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 : Option (C) :   20%

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 : Option (A) :   12% moisture content

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