500 Best Concrete Technology- MCQ
Q113). The concrete mix is said to be workable if it has
a).compatibility
b).movability
c).stability
d).all of these
Correct Answer:
all of these
Explanation:
Q114). The internal friction between the ingredients of concrete is minimised by
a).adopting coarse aggregates
b).using more water
c).reducing the surface area
d).all of these
Correct Answer:
all of these
Explanation:
Q115). For the improvement of workability of concrete, the shape of aggregate recommended is
a).irregular
b).angular
c).round
d).flaky
Correct Answer:
round
Explanation:
Q116). The use of air entraining agents in concrete
a).increases workability of concrete
b).decreases bleeding
c).decreases strength
d).all of these
Correct Answer:
all of these
Explanation:
Q117). The workability of concrete is expressed by
a).water cement ratio
b).slump value
c).compaction factor
d).both A and B
Correct Answer:
both A and B
Explanation:
Q118). The workability of concrete can be improved by adding
a).hydrated lime
b).fly ash
c).calcium chloride
d).all of these
Correct Answer:
all of these
Explanation:
Q119). The Steel mould used for slump test is in the form of a
a).cube
b).cylinder
c).frustrum of a cone
d).none of these
Correct Answer:
frustrum of a cone
Explanation:
Q120). The top diameter, bottom diameter and height of the mould used for slump test are respectively
a).100 mm, 200 mm, 300 mm
b).200 mm, 100 mm, 300 mm
c).200 mm,300 mm, 100 mm
d).100 mm,300 mm, 200 mm
Correct Answer:
100 mm, 200 mm, 300 mm
Explanation: