Civil Engineering - Building Materials

6. 

Quick lime

A. generates heat when added to water
B. reacts with carbon dioxide
C. may be used for white-washing
D. when mixed with water forms slaked lime
E. all the above.

Answer: Option E

Explanation:

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7. 

Age of a tree may be ascertained by

A. radius of its stem
B. circumference of its stem
C. number of branches
D. number of annual rings.

Answer: Option D

Explanation:

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8. 

The portion of a brick cut to form angles other than right angles in plan, is known as

A. queen closer
B. king closer
C. closer
D. squint brick.

Answer: Option D

Explanation:

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9. 

Pick up the correct statement from the following:

A. Slaked lime contains calcium hydroxide
B. Quick lime contains calcium oxide
C. Slaked lime may be obtained from quick lime
D. Slaked lime is obtained by adding water to quick lime
E. All the above.

Answer: Option E

Explanation:

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10. 

Plywood is obtained by gluing wooden sheets at

A. 100 to 150 N/cm2
B. 100 to 130°C
C. both (a) and (b)
D. Neither (a) nor (b).

Answer: Option C

Explanation:

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