Which of the following is the softest material ?

Related Mcqs:

Laminar flow region is said to exist during agitation of a liquid in an agitator, when the value of Reynolds number is________________?

A. > 10 B. < 10 C. > 100 D. < 100...

Gyratory crushers compared to the reciprocating jaw crushers__________________?

A. Have greater capacity per unit of discharge area B. Crush intermittently C. Are less suitable for coarse materials D. Have less steady power consumption...

There is practically no alternative/competitor to _________________ in the beneficiation treatment of sulphide ores?

A. Classification B. Tabling C. Jigging D. Froth floatation...

Which of the following is not a wet classifier ?

A. Sharpies super-centrifuge B. Hydrocyclones C. Dorr Oliver rake classifier D. None of these...

Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?

A. cos α = (dr + dp)/(dr + df) B. cos α = (dr + df)/(dr + dp) C. tan α = (dr + dp)/(dr + df) D. sin α = (dr + dp)/(dr + df)...