Multiple choice

By the interaction of chlorine with which of the following is bleaching powder obtained?

  1. Dilute solution of calcium hydroxide

  2. Dry slaked lime

  3. Concentrated solution of calcium hydroxide

  4. Dry calcium oxide
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A Correct answer
Explanation

Bleaching powder (calcium hypochlorite) is obtained by the interaction of chlorine with a dilute solution of calcium hydroxide (slaked lime). The reaction produces Ca(OCl)Cl which acts as the bleaching agent.

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