GENERAL KNOWLEDGE

Detailed explanation-1: -A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. Catalysis is the process of adding a catalyst to facilitate a reaction.

Detailed explanation-2: -The rate of a reaction can be increased by adding a suitable catalyst. A catalyst is a substance which increases the rate of a chemical reaction but it is not used up (remains chemically unchanged at the end). It provides an alternative reaction pathway of lower activation energy.

Detailed explanation-3: -A catalyst is a substance which increases the rate of the reaction without itself undergoing any change.

Detailed explanation-4: -Catalysts are generally foreign substances but sometimes one of the product formed may act as a catalyst and such a catalyst is called “auto catalyst” and the phenomenon is called auto catalysis.

Detailed explanation-5: -In general, catalytic action is a chemical reaction between the catalyst and a reactant, forming chemical intermediates that are able to react more readily with each other or with another reactant, to form the desired end product.