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| 1. |
Match the items in Column I with the relevant item in Column II.Column IColumn 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» (i) → (b), (d) (ii) → (c) (iii) → (a), (c) | |