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In which of the following, the self cleansing velocity is maximum?

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+1 vote
in Environmental Engineering by (81.4k points)
In which of the following, the self cleansing velocity is maximum?

(a) Angular stones

(b) Fine sand

(c) Fine clay

(d) Fine gravel

I had been asked this question in a national level competition.

This is a very interesting question from Minimum and Maximum Velocity of Flow in division Hydraulic Design of Sewers of Environmental Engineering

1 Answer

+2 votes
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Best answer
Correct option is (a) Angular stones

For explanation I would say: The self cleansing velocity for angular stones is 100cm/Sec while of fine sand, fine clay and fine gravel are 15cm/Sec, 7.5cm/Sec and 30cm/Sec respectively.

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