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NEET2008Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Assertion : Bleaching powder reacts with dilute acids to evolve chlorine. Reason : The chlorine liberated by the action of dilute acids on bleaching powder is called available chlorine.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of assertion.

Step-by-step solution

The reaction involved is CaOCl ₂+ H ₂ SO ₄ CaSO ₄+ H ₂ O + Cl ₂ The available chlorine may be defined as the % of chlorine liberated when one mole of bleaching powder (127 ~g ) is treated with excess of dilute H ₂ SO ₄ .

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