Building Materials - Section 5 Multiple Questions and Answers.
Exercise Questions ::
Building Materials
11. | When a brick is immersed in water for 24 hours and then dried, if |
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| A. | no grey or white deposits appear on the surface, the brick is free from soluble salts |
| B. | 10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence |
| C. | 50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence |
| D. | All the above. |
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Published by:Michael Daani
Published by:Michael Daani
13. | Pick up the correct statement from the following: |
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| A. | Acid test is done to find out the weathering quality of stones |
| B. | Attrition test is done to find out the rate of wear of stones which are used in road construction |
| C. | Crushing test is done to find out the compressive strength of the stone |
| D. | Impact test is done to determine toughness of a stone |
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Published by:Michael Daani
Published by:Michael Daani
15. | Pick up the correct characteristic of Pyroxene from the following: |
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| A. | It forms octagonal crystals |
| B. | It converts to chlorine by hydration |
| C. | Its density is 2.3 to 3.6 g/cm2 |
| D. | Its hardness is 5 to 6 |
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Published by:Michael Daani
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