Building Materials - Section 5 Multiple Questions and Answers.




21.Pick up the correct statement from the following:
A. Horn blende mineral is brittle
B. Muscovite is also known as white mica and potashmica
C. Biotite is also known as blackmica
D. All the above.

22.The base material for distemper, is
A. chalk
B. lime
C. lime putty
D. cement wash.

23.The thermosetting plastic
A. becomes rigid when moulded at suitable pressure and temperature
B. at 127°C to 177°C permanently set and further application of heat does not soften it
C. charrs at 343°C
D. All the above.

24.Pick up the synthetic resin from the following:
A. Malamine resin
B. Phenolic resin
C. Resorcinol resin
D. Urea resin

25.Slacking of lime is affected by
A. keeping it exposed to air
B. immersing the lime in water
C. crushing the lime lumps
D. none of these.

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