Civil Engineering - Building Materials

16. 

Black marble is generally found in the district of

A. Jodhpur
B. Jaipur
C. Jabalpur
D. Jaisalmer
E. Pune.

Answer: Option B

Explanation:

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17. 

The most fire resistant paints are :

A. enamel paints
B. aluminium paints
C. asbestos paints
D. cement paints.

Answer: Option C

Explanation:

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18. 

If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is

A. 0.70 P
B. 0.75 P
C. 0.80 P
D. 0.85 P
E. 0.90 P.

Answer: Option D

Explanation:

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19. 

A pug mill is used for

A. softening brick earth
B. moulding brick earth
C. tempering brick earth
D. providing brick earth
E. all the above.

Answer: Option C

Explanation:

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20. 

A good brick earth should contain :

A. about 20% to 30% of alumina
B. about 50% to 60% of silica
C. not more than 5% of lime
D. about 5 to 6% of oxide of lime
E. All the above.

Answer: Option E

Explanation:

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