Q.

The reactants used to prepare bleaching powder are:

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a

Hydrogen gas and sdoium chloride

b

Chlorine gas and calcium hydroxide

c

Hydrogen gas and calcium hydroxide

d

Chloride gas and sodium chloride

answer is B.

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Detailed Solution

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The bleaching powder is chemically known as calcium oxychloride with the chemical formula of CaOCl2.

It is manufactured by the action of chlorine gas on dry-slaked lime (Ca(OH)2).

Thus, the reactants are chlorine gas and Calcium hydroxide.

Hence, the correct answer is-Chlorine gas and calcium hydroxide.

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