Civil Engineering - Building Materials

31. 

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
E. 25 litres.

Answer: Option D

Explanation:

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32. 

The presence of sand in brick earth prevents:

A. cracking of bricks
B. shrinkage of bricks
C. warping of bricks
D. none of these.

Answer: Option C

Explanation:

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33. 

The property by virtue of which lime sets under water, is known as

A. slacking
B. setting
C. hydraulicity
D. calcining.

Answer: Option C

Explanation:

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34. 

Percentage content of silica in window glass, is

A. 40 to 45
B. 50 to 55
C. 60 to 65
D. 70 to 75.

Answer: Option D

Explanation:

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35. 

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

A. 10
B. 12
C. 15
D. 17.

Answer: Option D

Explanation:

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