The base material for distemper, is chalk lime lime putty cement wash.

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1. When a brick is immersed in water for 24 hours and then dried, if
Options
A. no grey or white deposits appear on the surface, the brick is free from soluble salts
B. 10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence
C. 50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence
D. All the above.

5. The rocks having alumina or clay as their major constituents, are known as
Options
A. siliceous rocks
B. argillaceous rocks
C. calcareous rocks
D. sedimentary rocks
E. igneous rocks.

6. Pick up the correct statement from the following:
Options
A. Acid test is done to find out the weathering quality of stones
B. Attrition test is done to find out the rate of wear of stones which are used in road construction
C. Crushing test is done to find out the compressive strength of the stone
D. Impact test is done to determine toughness of a stone
E. All the above.

7. Distemper is
Options
A. a paint consisting of powdered chalk, pigments, and water
B. a water proofing agent
C. a paint consisting of coloured cement and water
D. a drying agent.

9. Pick up the correct statement from the following:
Options
A. Lime is available in free state
B. Lime is available by dissolving calcium carbonate in water
C. Lime is available by calcining calcium carbonate at 900�C
D. Lime is nothing but calcium chloride
E. None of these.

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