Civil Engineering - Building Materials
Exercise :: Building Materials - Section 7
| 26. |
Seasoning of timber is done for |
| A. |
increasing moisture content | | B. |
decreasing moisture content | | C. |
increasing strength of timber | | D. |
none to these. |
Answer: Option B
Explanation:
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| 27. |
Bitumen felt is used for |
| A. |
water proofing | | B. |
damp proofing | | C. |
both (a) and (b) | | D. |
neither (a) nor (b). |
Answer: Option C
Explanation:
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| 28. |
According to ISI, bitumen is classified into |
| A. |
2 grades | | B. |
4 grades | | C. |
6 grades | | D. |
8 grades. | | E. |
10 grades. |
Answer: Option E
Explanation:
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| 29. |
Lime putty |
| A. |
is made from hydraulic lime | | B. |
is made by adding lime to water | | C. |
can be used only upto three days | | D. |
may be obtained from drying lime water mix passing through IS sieve No. 300 | | E. |
all of above. |
Answer: Option E
Explanation:
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| 30. |
The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is |
Answer: Option E
Explanation:
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