Which of the following is/are the characteristic(s) of catalyst?

(1) Catalyst catalyses the forward and backward reactions to same extent in a reversible reaction thus, has no effect on equilibrium constant- Thus, incorrect.

(2) Correct

(3) Catalyst accelerates the rate of the reaction. Thus, correct.

(4) Finely divided metals are preferred in the form of a catalyst. This increases surface area Thus, correct.