500 Best Building Materials MCQ
Q177). In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is
a).right angles
b).45°
c).60°
d).parallel
Correct Answer:
right angles
Explanation:
Q178). The most durable varnish is
a).water varnish
b).spirit varnish
c).turpentine varnish
d).oil varnish
Correct Answer:
oil varnish
Explanation:
Q179). Softer variety of steel may be obtained by
a).Cementation process
b).crucible process
c).Bessemer process
d).Open hearth process.
Correct Answer:
Bessemer process
Explanation:
Q180). Pick up the correct statement from the following:
a).The baked earth is called terra-cotta
b).The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware
c).The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware
d).All the above.
Correct Answer:
All the above.
Explanation:
Q181). Calcination of iron ores is done
a).to remove moisture
b).to remove carbonic acid
c).by roasting in heaps
d).All the above.
Correct Answer:
All the above.
Explanation:
Q182). Strength of cement concrete primarily depends upon
a).quality of water
b).quantity of aggregate
c).quantity of cement
d).water-cement ratio.
Correct Answer:
water-cement ratio.
Explanation:
Q183). Rapid hardening cement contains
a).Tri-calcium silicate
b).Tri-calcium aluminate
c).Tetra-calcium alumino-ferrite
d).Dicalcium silicate.
Correct Answer:
Tri-calcium silicate
Explanation:
Q184). Bitumen emulsion is
a).a liquid containing bitumen in suspension
b).a paint
c).used as anti-corrosive paint
d).all the above.
Correct Answer:
all the above.
Explanation: