Civil Engineering - Building Materials

46. 

Pick up the correct statement from the following:

A. Steel produced by open hearth process is milder than that obtained by the bessemer process
B. Engineers prefer open hearth steel for structural purpose as it is more homogenous
C. Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel
D. all the above.

Answer: Option D

Explanation:

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47. 

Pick up the correct statement from the following:

A. The distinct plane of division along which a stone can easily be split, is called natural bed of stone
B. The natural bed of sedimentary rocks is along the planes of stratification
C. The natural bed of igneous rocks is not defined
D. All the above.

Answer: Option D

Explanation:

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48. 

Invar contains

A. 12% of nickel
B. 24% of nickel
C. 30% to nickel
D. 36% of nickel.

Answer: Option D

Explanation:

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49. 

Based on flow quality, the sequence of pipes is

A. A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes
B. C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes
C. C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes
D. None of these.

Answer: Option B

Explanation:

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