| 1. | In order to provide colour, hardness and strength to the cement, the ingredient used is ? | |
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lime
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silica
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alumina
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iron oxide
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Report Question| 2. | In the manufacture of cement, the dry or wet mixture of calcareous and argillaceous materials burnt at a temperature between ? | |
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900°C to 1000°C
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1000°C to 1200°C
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1200°C to 1500°C
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1500°C to 1600°C
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| 3. | The capacity of a ware-house depends upon the ? | |
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floor area occupied by one cement bag
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height to which the cement bags are piled
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either (a) and (b)
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both (a) and (b)
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| 4. | The cement concrete in which high compressive stresses are artificially induced before its actual use, is called ? | |
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plain cement concrete
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reinforced cement concrete
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prestressed cement concrete
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lime concrete
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| 5. | The presence of tricalcium silicate in cement ? | |
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hydrates the cement rapidly
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generates less heat of hydration
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offers high resistance to sulphate attack
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all of these
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| 6. | The importance of storing the various ingredients of concrete is ? | |
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to maintain the uniformity of grading
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to maintain the uniformity of moisture
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to maintain the strength of materials
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both (a) and (b)
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| 7. | Which of the following cements is expected to have the highest compressive strength after 3 days ? | |
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ordinary Portland cement
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rapid hardening cement
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high alumina cement
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sulphate resisting cement
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| 8. | Pozzolana is essentially a silicious material containing clay upto ? | |
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20%
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40%
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60%
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80%
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| 9. | Too much fineness of cement ? | |
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results cracks in concrete
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generates greater heat
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develops early strength
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both (a) and (b)
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| 10. | The measuring 50 litres of aggregate, the inner dimensions of a farma should be ? | |
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25 cm x 25 cm x 40 cm
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29 cm x 29 cm x 48 cm
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30 cm x 30 cm x 50 cm
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31 cm x 31 cm x 52 cm
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