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How many classifications are there for sand based on the grain size distribution?

a) 3
b) 2
c) 5
d) 4

Answer: a
Explanation: There are three types of sands based on grain size distribution. They are fine (passes through 1.5875 mm sieve), coarse (passes through 3.175 mm sieve) and gravelly sand (passes through 7.62 mm sieve).

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