Question

Substances which CANNOT be decomposed into two or more different substances by chemical process are called _______.
(A) alloys
(B) molecules
(C) elements
(D) compounds

Answer 1

I think option c) element is the answer

Answer 2

option C is the correct answer because -

-Alloys are made by combining two or more metals thus can be decomposed.

-Molecules refer to a group of atoms and may be decomposed into them.

-Compounds are a mixture of two substances which can be separated.

Out of these Elements are the only one who is made of one type of particles and cannot be decomposed into different substances.