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JEE Main levelSingle correct optionDifficulty 2 of 3ph195

Assertion (A): Chlorine water kept in sunlight gradually loses its colour and its bleaching power. Reason (R): formed in chlorine water decomposes in light to and .

  1. ABoth A and R are true and R is the correct explanation of A
  2. BBoth A and R are true but R is not the correct explanation of A
  3. CA is true but R is false
  4. DA is false but R is true

Answer: A

, and in light . The equilibrium then shifts until all the chlorine is converted into , so the bleaching power is lost. Both statements are true and R explains A.
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