Civil Engineering - Building Materials

26. 

The steel which contains fissures and cavities, is manufactured by

A. Cementation process
B. Crucible process
C. Bessemer process
D. Open hearth process.

Answer: Option A

Explanation:

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27. 

Pick up the volcanic rock from the following:

A. Granite
B. Dolerite
C. Basalt
D. All the above.

Answer: Option C

Explanation:

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28. 

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

A. right angles
B. 45°
C. 60°
D. parallel
E. None of these.

Answer: Option A

Explanation:

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29. 

The most durable varnish is

A. water varnish
B. spirit varnish
C. turpentine varnish
D. oil varnish
E. none of these.

Answer: Option D

Explanation:

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30. 

Softer variety of steel may be obtained by

A. Cementation process
B. crucible process
C. Bessemer process
D. Open hearth process.

Answer: Option C

Explanation:

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