Civil Engineering - Building Materials

46. 

Porcelain is used as :

A. sanitary wares
B. electric insulators
C. storage vessels
D. reactor chambers
E. All of the above.

Answer: Option E

Explanation:

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47. 

Durability of building stone is affected by its

A. chemical composition
B. texture
C. resistance to atmosphere
D. location in structure
E. all the above.

Answer: Option E

Explanation:

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48. 

Magnese steels

A. are non-magnetic
B. possess high electrical resistance
C. possess low coefficient of expansion
D. are used for the manufacture of rails
E. all the above.

Answer: Option E

Explanation:

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49. 

Pick up the metal refractory from the following:

A. Molyblendum
B. Tungsten
C. Zicronium
D. All of these.

Answer: Option D

Explanation:

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50. 

According to IS 399-1963, the weight of the timber is specified at

A. 8% moisture content
B. 10% moisture content
C. 12% moisture content
D. 14% moisture content.

Answer: Option C

Explanation:

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