Question

Which of the following statement is true?

• A. In pure substance, there can be some mixing of particles
• B. In impure substance, all the particles are identical
• C. In pure substance, all the particles are identical
• D. Either A or C

Answer 1

The correct option is C

In pure substance, all the particles are identical

A substance is said to be pure if all the particles present in it are identical. Similarly, if there are some non identical particles within a pool of identical particles, the substance is said to be impure.