Civil Engineering - Building Materials
Exercise :: Building Materials - Section 8
| 6. |
Pick up the correct statement from the following: |
| A. |
The free quartz suddenly expands at a temperature lower than 600°C | | B. |
The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2 | | C. |
The sand stone with silicates resist a fire in a better way | | D. |
The argillaceous stone though poor in strength can resist fire quite weak | | E. |
All the above. |
Answer: Option E
Explanation:
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| 7. |
The most commonly used base for timber painting, is |
| A. |
red lead | | B. |
zinc white | | C. |
white lead | | D. |
titanium white. |
Answer: Option C
Explanation:
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| 8. |
Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following: |
| A. |
absence of sun light | | B. |
dampness | | C. |
presence of sap | | D. |
stagnant air | | E. |
All the above, |
Answer: Option E
Explanation:
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| 9. |
The rocks formed from molten magma, are called |
| A. |
sedimentary rocks | | B. |
igneous rocks | | C. |
metamorphic rocks | | D. |
none of these. |
Answer: Option B
Explanation:
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| 10. |
Bitumen paints offer |
| A. |
pleasing surface | | B. |
hard surface | | C. |
smooth surface | | D. |
protective surface | | E. |
rough surface. |
Answer: Option D
Explanation:
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