Angle of nip of the crushing rolls does not depend upon the________?

The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________?

Stainless steel is welded with difficulty because of________?

Narrow coke ovens as compared to wider coke ovens________?

The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is________?

Pick out the wrong statement?