500 Best Building Materials MCQ
Q89). Plywood is made from
a).common timber
b).bamboo fibre
c).teak wood only
d).asbestos sheets.
Correct Answer:
teak wood only
Explanation:
Q90). Soundness test of cement determines
a).quality of free lime
b).ultimate strength
c).durability
d).initial setting
Correct Answer:
quality of free lime
Explanation:
Q91). The slag which floats on the surface of the molten iron generally contains
a).Lime (CaO) 45%
b).Silica (SiO) 35%
c).Alumina (AlO) 12%
d).all the above.
Correct Answer:
all the above.
Explanation:
Q92). Minimum of 40% of iron, is available in
a).Magnetite
b).Red haemetite
c).Limonite
d).Black band.
Correct Answer:
Black band.
Explanation:
Q93). If the iron ore contains clay as an impurity, the flux added during calcination, is
a).clay
b).lime stone
c).argillaceous iron ore
d).all the above.
Correct Answer:
lime stone
Explanation:
Q94). Cement is said to be of good quality if
a).its colour is not greenish grey
b).one feels cool by thrusting one’s hand in the cement bag
c).it is not smooth when rubbed in between fingers
d).none of these.
Correct Answer:
none of these.
Explanation:
Q95). Cast steel is manufactured by
a).Cementation process
b).Crucible process
c).Bessemer process
d).Open hearth process.
Correct Answer:
Crucible process
Explanation:
Q96). For the manufacture of plywood, veneers are placed so that grains of adjacent veneers
a).run at right angles
b).parallel
c).inclined at 45°
d).inclined at 60°.
Correct Answer:
run at right angles
Explanation: