500 Best Concrete Technology- MCQ
Q121). For high degree of workability the slump value should vary between
a).0 to 25 mm
b).25 to 50 mm
c).50 to 80 mm
d).80 to 100 mm
Correct Answer:
80 to 100 mm
Explanation:
Q122). For high degree of workability, the compaction factor is
a).0.65
b).0.75
c).0.85
d).0.95
Correct Answer:
0.95
Explanation:
Q123). Workability of concrete mix having very low water cement ratio should be obtained by
a).flexural strength test
b).slump test
c).compaction factor test
d).any one of these
Correct Answer:
compaction factor test
Explanation:
Q124). The workability of concrete by slump test is expressed as
a).minutes
b).mm/h
c).mm2/h
d).mm
Correct Answer:
mm
Explanation:
Q125). The slump test of concrete is used to measure its
a).consistency
b).mobility
c).homogeneity
d).all of these
Correct Answer:
consistency
Explanation:
Q126). If the slump of concrete mix is 70 mm, it’s workability is considered to be
a).very low
b).low
c).medium
d).high
Correct Answer:
medium
Explanation:
Q127). A compaction factor of 0.88 indicates that the workability of concrete mix is
a).very low
b).low
c).medium
d).high
Correct Answer:
medium
Explanation:
Q128). More water should not be added in the concrete mix, as to increase
a).strength
b).durability
c).water cement ratio
d).all of these
Correct Answer:
water cement ratio
Explanation: