Building Materials - Section 6 Multiple Questions and Answers.




46.For light and ornamental casting, the most unsuitable pig iron, is
A. Bessemer pig
B. Grey or foundry pig
C. White or forge pig
D. Mottled pig.

47.Seasoning of timber is essential to remove
A. knots from timber
B. sap from timber
C. twisted fibre from timber
D. roughness of timber.

48.The melting point of silica is :
A. 1570°C
B. 1630°C
C. 1730°C
D. 1850°C.

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