Civil Engineering - Building Materials

41. 

Blister steel

A. is obtained by cementation process
B. is full of fissures and cavities
C. can not be forged
D. can be easily welded
E. all the above.

Answer: Option E

Explanation:

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42. 

The most important constituent of varnish, is

A. drier
B. solvent
C. resin
D. all the above.

Answer: Option D

Explanation:

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43. 

A ferrous metal is

A. cast iron
B. wrought iron
C. steel
D. all the above.

Answer: Option D

Explanation:

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44. 

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

A. 80 : 13 : 7
B. 70 : 20 : 10
C. 60 : 35 : 5
D. none of these.

Answer: Option A

Explanation:

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45. 

Pick up the correct statement from the following:

A. Lime is available in free state
B. Lime is available by dissolving calcium carbonate in water
C. Lime is available by calcining calcium carbonate at 900°C
D. Lime is nothing but calcium chloride
E. None of these.

Answer: Option C

Explanation:

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