Match the items in Column I with the relevant item in Column II. (i) Hydrogen peroxide is used as a (a) zeolite

Question

Match the items in Column I with the relevant item in Column II.

| Column I | Column II |
| (i) Hydrogen peroxide is used as a | (a) zeolite |
| (ii) Used in Calgon method | (b) perhydrol |
| (iii) Permanent hardness of hard water is removed by | (c) sodium hexametaphosphate |
| | (d) propellant |

Answer 1

(i) → (b), (d) (ii) → (c) (iii) → (a), (c)