Building Materials - Section 6 Multiple Questions and Answers.




26.Mild steel is used for
A. structural works in beams, joints and girders
B. small sized water pipes
C. columns and struts
D. none of these.

27.The sequence of refractory materials according to increasing melting points is :
A. Dolomite, Magnesia, Bauxite, Chromite
B. Bauxite, Chromite, Dolomite, Magnesia
C. Magnesia, Bauxite, Dolomite, Chromite.
D. None of above

28.Veneering means
A. carving out designs on timber planks
B. chemically treating timber planks
C. thick layer of superior wood glued to inferior wood
D. thin layer of superior wood glued to inferior wood.

29.Laterite is a/an
A. volcanic rock
B. argillaceous rock
C. calcareous rock
D. silicious rock.

30.A stone is rejected if it absorbs water more than
A. 5%
B. 10%
C. 15%
D. 20%

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