Civil Engineering - Building Materials
Exercise :: Building Materials - Section 1
| 6. |
Ultimate strength to cement is provided by |
| A. |
Tricalcium silicate | | B. |
Di-calcium silicate | | C. |
Tri-calcium aluminate | | D. |
Tetra calcium alumino ferrite. |
Answer: Option B
Explanation:
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| 7. |
Elastomers can extend upto |
| A. |
five times their original dimensions | | B. |
seven times their original dimensions | | C. |
ten times their original dimensions | | D. |
three times their original dimensions. |
Answer: Option C
Explanation:
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| 8. |
Bitumen felt |
| A. |
is used as water proofing material | | B. |
is used as damp proofing material | | C. |
is made from bitumen and hessian fibres | | D. |
all the above. |
Answer: Option D
Explanation:
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| 9. |
In the method of condensation polymerization, |
| A. |
low-molecular substances are removed from the high molecular substance | | B. |
the reaction proceeds with an evolution of ammonia | | C. |
the reaction proceeds with an evolution of hydrogen chloride | | D. |
all the above. |
Answer: Option D
Explanation:
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| 10. |
In the cement the compound quickest to react with water, is |
| A. |
Tricalcium aluminate | | B. |
Tetra-calcium alumino-ferrite | | C. |
Tricalcium silicate | | D. |
Dicalcium silicate. |
Answer: Option A
Explanation:
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