1. _____ method of curing of concrete is preferable for rapid gain of strength of concrete.
[A] High-pressure steam curing
[B] Infrared radiation curing
[C] Sprinkling water
[D] Membrane curing
Answer: Option A
2. Which of the following statement(s) is/are correct?
- Higher Vee-Bee time shows lower workability
- Higher slump shows higher workability
- Higher compacting factor shows higher workability
[A] 1 and 2
[B] 2 and 3
[C] 1, 2 and 3
[D] Only 1
Answer: Option C
3. The compaction factor for good workability of concrete is _____.
[A] 0.70
[B] 0.95
[C] 0.80
[D] 0.85
Answer: Option B
4. The compressive strength of a standard concrete cube will be ______ than that of a standard concrete cylinder.
[A] 15% greater
[B] 15% lesser
[C] 5% greater
[D] 5% lesser
Answer: Option A
5. The expansion in Portland cement can be tested by ______.
[A] normal consistency test
[B] fineness test
[C] setting time test
[D] soundness test
Answer: Option D