Narrow coke ovens as compared to wider coke ovens________?

In physical adsorption, as compared to chemisorption, 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________?

Workers working in ________ industry are most prone to white lung cancer?

Which of the following can be calculated theoretically using steam table and Dalton’s law of partial pressure; if the relative humidity and dry bulb temperature of moist air is known?

Low grade coal is ________ to produce ammonia synthesis gas?