| 1. | The time required for seasoning of timber in kiln seasoning is ? | |
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2 to 5 days
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5 to 10 days
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10 to 20 days
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20 to 40 days
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Report Question| 2. | The paint which has high reflective property is ? | |
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cellulose paint
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casein paint
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bronze paint
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enamel paint
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| 3. | The best primer used for structural steel work is ? | |
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white lead
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red lead
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zinc oxide
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iron oxide
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| 4. | The timber whose thickness is less than 5 cm and the width exceeds 12 cm, is called a ? | |
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board
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plank
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batten
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log
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| 5. | According to Indian standard specifications, the full strength of concrete is achieved after ? | |
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7 days
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14 days
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21 days
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28 days
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| 6. | During the process of burning limestone, clay forms certain compound which ? | |
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gives hydraulic lime
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gives power of quick setting
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does not allow to be dissolved in the outside water when used in damp situations
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all of the above
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| 7. | The cementing property in cement is mainly due to ? | |
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lime
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silica
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iron oxide
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alumina
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| 8. | The good clay for making bricks is ? | |
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unweathered clay
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weathered clay
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silted soil
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black cotton soil
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| 9. | Quick lime on reaction with water gives ? | |
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hydraulic lime
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slaked lime
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hydrated lime
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poor lime
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| 10. | Which of the following statement is correct ? | |
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The fat lime swells two to three times of its original volume during slaking
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The poor lime is of pure white colour
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The feebly hydraulic lime slakes sluggishly
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all of the above
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