| 1. | The attrition test on stones is performed ? | |
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to determine the crushing strength of the stone
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for assessing the resistance of stone to the sun, rain, wind etc
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to ascertain the stability of the stone when exposed to acid fumes
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for determining the rate of wear of stone due to grinding action under traffic
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Report Question| 2. | The bricks after moulding should be dried in ? | |
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open air
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sun for 3 to 8 days
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air for 3 to 8 days but not in sun
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hot air for 3 days
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| 3. | The hydraulic lime which resembles very much with Portland cement in its chemical composition is called ? | |
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feebly hydraulic lime
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moderately hydraulic lime
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eminently hydraulic lime
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none of these
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| 4. | The compound responsible for the initial setting of cement, is ? | |
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tri-calcium aluminate
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tetra-calcium alumino ferrite
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both (a) and (b)
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none of these
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| 5. | Poor or lean lime ? | |
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slakes rapidly with considerable evolution of heat
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takes very long time to develop adequate strength
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has high plasticity
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none of the above
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| 6. | Which of the following is an example of silicious rock ? | |
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Granite
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Gneiss
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Quartzite
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all of these
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| 7. | Gypsum is added in the manufacture of Portland cement ? | |
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while mixing the raw materials
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during burning in the rotary kiln
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at the beginning of grinding the clinker
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at the end of grinding the clinker into powder
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| 8. | The rocks formed due to solidification of molten mass laying below or above the earth surface are called ? | |
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aqueous rocks
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sedimentary rocks
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metamorphic rocks
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igneous rocks
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| 9. | Laterite is chemically classified as ? | |
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calcareous rock
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argillaceous rock
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silicious rock
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metamorphic rock
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| 10. | Marble is an example of ? | |
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aqueous rock
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metamorphic rock
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sedimentary rock
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igneous rock
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