Which of the following factors are responsible for theh increase in the rate of a surface catalysed reaction
1. A catalyst provides proper orientation for the reactant molecules to react.
2. Heat of adsorption of reactants on a catalyst helps reactant molecules of overcome activation energy.
3. The catalyst increases thhe activation energy of the reaction.
4. Adsorption increases thhe local concentration of reatant molecules on the surface of the catalyst
Select the correct answer using the code given below:-

Options

A. 1 and 2
B. 1 and 3
C. 2 and 4
D. 1,2 and 4

Answer

D