Select the incorrect statement about the adsorption theory from the following option.

• A. The surface of the solid catalyst possess some isolated active centres having residual affinity
• B. Due to these centres, the molecules of the gaseous reactants get adsorbed in unimolecular thick layer
• C. The adsorbed reactants get activated and then react
• D. The energy required for activation is more than that required for uncatalysed reaction