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

2 Views|Posted 8 months ago

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8 months ago

This is a matching answer type question as classified in NCERT Exemplar

(i) → (b); (ii) → (c); (iii) → (a)

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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