(A) 10 atm-1 (X)

**(B) 105 atm-1 ()**

(C) 10 (dimensionless) (X)

(D) 105 (dimensionless) (X)

Answers: **Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant ‘K’ is ****105 atm-1.**