The liquid used for the washing of coal in an industrial coal washery – McqOptions

MCQOPTIONS

1.	The liquid used for the washing of coal in an industrial coal washery is a mixture of water and ____________________?
A.	Carbon tetrachloride
B.	Sand (40%)
C.	Mineral oil of high viscosity & specific gravity (1.6)
D.	None of these
Answer» C. Mineral oil of high viscosity & specific gravity (1.6)

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