500 Best Building Materials MCQ
Q17). If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called
a).Bessemer pig
b).Grey or foundry pig
c).White or forge pig
d).Mottled pig.
Correct Answer:
White or forge pig
Explanation:
Q18). Stainless steel contains
a).18% of chromuim and 8% nickel
b).8% of chromium and 18% of nickel
c).12% of chromium and 36% of nickel
d).36% of chromium and 12% of nickel.
Correct Answer:
18% of chromuim and 8% nickel
Explanation:
Q19). Pick up the hypabyssal rock from the following:
a).Granite
b).Dolerite
c).Basalt
d).All the above.
Correct Answer:
Dolerite
Explanation:
Q20). Depending on the chemical composition and mechanical properties, iron may be classified as
a).cast iron
b).wrought iron
c).steel
d).all the above.
Correct Answer:
all the above.
Explanation:
Q21). Wrought iron contains carbon about
a).1.5% to 5.5%
b).0.5% to 1.75%
c).0.1% to 0.25%
d).none to these.
Correct Answer:
0.1% to 0.25%
Explanation:
Q22). The main constituent of fly-ash, is
a).aluminium oxide
b).silica
c).ferrous oxide
d).All of these.
Correct Answer:
All of these.
Explanation:
Q23). Bitumen in
a).solid state, is called asphalt
b).semi fluid state, is called mineral tar
c).fluid state, is called petroleum
d).all the above.
Correct Answer:
all the above.
Explanation:
Q24). The plastics made from cellulose resin
a).are as clear as glass
b).are tough and strong
c).possess excellent electrical properties
d).All the above.
Correct Answer:
All the above.
Explanation: