500 Best Concrete Technology- MCQ
Q17). The sound absorption coefficient of light weight concrete is nearly ………. than that of ordinary concrete
a).twice
b).three times
c).four times
d).six times
Correct Answer:
twice
Explanation:
Q18). In making precast structural units for partition and wall lining purposes, the concrete should be
a).sawdust concrete
b).air entrained concrete
c).lightweight concrete
d).vacuum concrete
Correct Answer:
lightweight concrete
Explanation:
Q19). The material used as an ingredient of concrete is usually
a).cement
b).aggregate
c).water
d).all of these
Correct Answer:
all of these
Explanation:
Q20). A suitable admixture added at the time of preparing the concrete mix, makes the concrete
a).waterproof
b).acid proof
c).highly strong
d).all of these
Correct Answer:
all of these
Explanation:
Q21). The function of aggregates in concrete is to serve as
a).binding material
b).filler
c).catalyst
d).all of these
Correct Answer:
filler
Explanation:
Q22). Calcareous material used in the manufacture of cement consists of
a).limestone
b).chalk
c).shells
d).all of these
Correct Answer:
all of these
Explanation:
Q23). In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is burnt in a
a).country kiln
b).continuous flare kiln
c).rotary kiln
d).all of these
Correct Answer:
rotary kiln
Explanation:
Q24). In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials is burnt at a temperature between
a).900°C to 1000°C
b).1000°C to 1200°C
c).1200°C to 1500°C
d).1500°C to 1600°C
Correct Answer:
1500°C to 1600°C
Explanation: