1.

Which of the following statements are correct about solid catalyst ?

Answer»

Same reactants may give different product by using different catalyst. 
Catalyst does not change `DeltaH` of the reaction. 
Catalyst is required in large quantities to CATALYSE reactions. 
Catalytic activity of a solid catalyst does not depend UPON the strength of chemisorption. 

Solution :Catalysts show selectivity. They direct the chemical reactions to YEILD a definite product. The catalyst INCREASES reaction RATES by decreasing activation energy, hence `DeltaH` is constant.


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