Coarse sand is one which is passing through a screen with clear openings of (a) 3.18 mm (b) 2.18 mm (c) 1.38 mm (d) 8.31 mm (e) 1.81 mm The fineness modulus of sand should be between (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 4 and 5 (e) 5 and 7 Water is taken as free from organic matter if the pH value lies between (a) 8 and 10 (b) 9 and 10 (c) 6 and 8 (d) 4 and 6 (e) 3 and 5
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