Discussion :: Building Materials
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When a brick is immersed in water for 24 hours and then dried, if
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A.
no grey or white deposits appear on the surface, the brick is free from soluble salts |
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B.
10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence |
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C.
50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence |
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D.
All the above. |
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Answer : Option D
Explanation :
No answer description available for this question
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