500 Best Building Materials MCQ
Q41). The commonly used colour pigment in paints, is
a).ambers
b).carbon black
c).iron oxide
d).all the above.
Correct Answer:
all the above.
Explanation:
Q42). Varnish is a transparent or semi-transparent solution of resinuous substances in
a).alcohol
b).linseed
c).turpentine
d).all the above.
Correct Answer:
all the above.
Explanation:
Q43). Initial setting time of cement for asbestos cement products should be not less than
a).30 minutes
b).50 minutes
c).75 minutes
d).90 minutes.
Correct Answer:
90 minutes.
Explanation:
Q44). The variety of pig iron used for the manufacture of steel by Bessemer process, is
a).Bessemer pig
b).Grey pig
c).White forge pig
d).Mottled pig.
Correct Answer:
Bessemer pig
Explanation:
Q45). For melting one tonne of cast iron
a).700 m air is required
b).20 kg limestone is required
c).one quintal coke is required
d).all the above.
Correct Answer:
all the above.
Explanation:
Q46). For filling cracks in masonry structures, the type of bitumen used, is
a).cut-back bitumen
b).bitumen-emulsion
c).blown bitumen
d).plastic bitumen.
Correct Answer:
plastic bitumen.
Explanation:
Q47). Plastic
a).is an organic substance
b).consists of natural or synthetic binders
c).finished products are rigid and stable at normal temperature
d).All the above.
Correct Answer:
All the above.
Explanation:
Q48). Vanadium steel is generally used for
a).railway switches and crossing
b).bearing balls
c).magnets
d).axles and springs.
Correct Answer:
axles and springs.
Explanation: