Activity co-efficient is a measure of the________?

Which of the following is not required in the manufacture of soda ash by Solvay process?

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is________?

Adsorption is a unit operation which generally involves ________ systems?

Materials having ________ lattice structure are usually the most ductile?

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is ________?