Which of the following options is/are correct With respect to catalysis /catalyst?

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Zeolites acts as good shape-selective catalyst because of their honeycomb-like structure.

The modern adsorption theory for heterogeneous catalysts can explain action of catalytic promoters and catalytic poisons.

Catalytic action is highly selective.

Mixture of enzyme catalyst in water will show Tyndall effect.

answer is A, C.

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Detailed Solution

The zeolites' honeycomb-like structure makes them excellent shape-selective catalysts since only reactants and products with sizes smaller than the zeolite's pore size and structures resembling its pores will be adsorbed on the zeolite.
They have the power to control the response to produce a certain result. The same reactants may be used in a reaction, but a different catalyst may produce different results. This is referred to as the catalyst selectivity. Catalysts have a very strict selection criteria.

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