What is a zero order reaction? Give two examples.
Differentiate between cryoscopic and ebullioscopic constant.
Define phenol water system.

I guess 3 to be honest and that's what I think

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation:

it's all four options.