Civil Engineering - Building Materials

16. 

For sanitary pipes and chemical stonewares,

A. salt glazing is used
B. lead glazing is used
C. opaque glazing is used
D. None of these.

Answer: Option A

Explanation:

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17. 

The steel used for rails under heavy traffic and on sharp curves, is

A. Nickel steel
B. Chrome steel
C. Magnese steel
D. Vanadium steel.

Answer: Option C

Explanation:

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18. 

The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick

A. 20%
B. 15%
C. 10%
D. None of these.

Answer: Option A

Explanation:

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19. 

Snowcrete is one of the patent forms of

A. distempers
B. water proof cement paints
C. enamel paints
D. cellulose paints.

Answer: Option B

Explanation:

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20. 

The usual percentages of clay and metal in cermet are :

A. 50%, 50%
B. 60%, 40%
C. 70%, 30%
D. 80%, 20%.

Answer: Option D

Explanation:

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