Question

Odd one in carbolic acid, phenol, boric acid mouth wash, chlorine, iodine

Answer 1

mouth wash is odd one

Answer 2

The odd one is mouth wash. Rest products like carbolic acid, phenol, boric acid, chlorine, iodine are all antiseptic products and anti-dermicide and cannot be used internally mostly.

On the other hand mouth wash can be used internally and it is a mouth friendly product which keeps mouth fresh and can destroy germs inside oral cavity.

It is a mild germicide.