| 1. | The chief ingredient of a paint is ? | |
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alcohol
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drier
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oil
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pigment
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Report Question| 2. | The amount of gypsum, usually, added in the manufacture of cement is ? | |
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0.1 to 0.5%
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0.5 to 1%
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1 to 3%
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3 to 5%
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| 3. | The percentage of the slag component of Portland-slag cement varies from ? | |
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10 to 40%
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40 to 70%
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70 to 80%
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80 to 90%
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| 4. | Linseed oil is rapidly soluble in ? | |
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alcohol
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turpentine
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naptha
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all of these
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| 5. | The base material for distemper is ? | |
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chalk
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lime
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clay
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lime putty
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| 6. | The expansion in Portland cement can be tested by ? | |
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fineness test
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soundness test
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setting time test
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normal consistency test
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| 7. | The normal consistency of Portland cement is about ? | |
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10%
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15%
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20%
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25%
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| 8. | The strength of cement concrete increases with ? | |
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increase in the size of aggregate
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increase in the temperature of water of curing
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increase in the size of aggregate
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all of the above
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| 9. | The purpose of seasoning of timber is to ? | |
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change the direction of grains
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remove voids
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reduce moisture content
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all of these
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| 10. | The durability of concrete is proportional to ? | |
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sand content
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water-cement ratio
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cement-aggregate ratio
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aggregate-water ratio
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