| 1. | The commonly used cement in cement paints is ? | |
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alumina cement
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rapid hardening cement
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white cement
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Portland cement
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Report Question| 2. | The thickness of five-ply sheet varies from ? | |
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3 to 6 mm
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16 to 20 mm
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9 to 16 mm
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6 to 9 mm
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| 3. | The defect caused due to over-maturity and unventilated storage of the wood during its is called ? | |
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heart shake
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rind gall
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knot
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foxiness
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| 4. | The compressive strength of paving bricks should not be less than ? | |
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50 MN/m²
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40 MN/m²
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30 MN/m²
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20 MN/m²
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| 5. | The thinner used for oil paints is ? | |
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carbon tetrachloride
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water
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any one of these
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turpentine
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| 6. | Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is ? | |
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25 to 30%
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5 to 10%
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30 to 40%
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10 to 25%
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| 7. | The compressive strength of second class bricks should not be less than ? | |
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12 MN/m²
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7.5 MN/m²
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10.5 MN/m²
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9 MN/m²
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| 8. | The average out-turn of first class bricks in clamp burning is about ? | |
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80%
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70%
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60%
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50%
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| 9. | The percentage of the residue left after sieving good Portland cement in 90 micron sieve should not exceed ? | |
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5%
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30%
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10%
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20%
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| 10. | The compressive strength of a good Portland cement and standard sand mortar after 3 days of curing should not be less than ? | |
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11.5 MN/m²
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17.5 MN/m²
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7 MN/m²
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21 MN/m²
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