In a sludge digestion tank, if the moisture content of sludge is reduc – McqOptions

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1.	In a sludge digestion tank, if the moisture content of sludge is reduced from 90% to 80% then the percentage decrease in the volume of sludge is
A.	5%
B.	10%
C.	25%
D.	50%
Answer» E.

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