RESEARCH METHODOLOGY

Detailed explanation-1: -A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process.

Detailed explanation-2: -A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy without itself being consumed by the reaction.

Detailed explanation-3: -A catalyst is a substance that increases the rate of a chemical reaction but is not consumed by the reaction.

Detailed explanation-4: -A catalyst provides an alternative reaction pathway that has a lower activation energy than the uncatalysed reaction. This does not change the frequency of collisions. However, it does increase the frequency of successful collisions because a greater proportion of collisions now exceeds this lower activation energy.

Detailed explanation-5: -Explanation: Among these options, an enzyme is an only option which is a biocatalyst that catalyzes the chemical reaction without being changed while all other options are of the catalyst which increases or decrease the rate of reaction based on their concentration.