Question

A catalyst is _____.

-Choices-
not used up in a reaction
the product of a combustion reaction
one of the reactants in a single-replacement reaction
a solid product of a reaction

Answer 1

A catalyst isn't used up in the reaction. It is only used to speed up the process of the reaction, but it isn't used up to form any new compounds

Answer 2

Answer: Option (a) is the correct answer.

Step-by-step explanation:

A catalyst is the substance which helps in increasing the rate of a reaction without itself getting consumed in the reaction.

A catalyst changes the path of reaction so that molecules with lower energy can easily participate in the reaction. As a result, formation of products increases.

Thus, we can conclude that out of the given options, a catalyst is not used up in a reaction.