NEET Chemistry Chemical Kinetics Questions Solved

If a reaction A + B$\to$ C is exothermic to the extent of 30 kJ/mol and the forward reaction has an activation energy 70 kJ/mol, the activation energy for the reverse reaction is

(A) 30 kJ/mol

(B) 40kJ/mol

(C) 70 kJ/mol

(D) 100 kJ/mol