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JEE Main levelSingle correct optionDifficulty 2 of 3qc021

Among the following hydroxides, the one that is precipitated when is added to a solution containing excess is

  1. A
  2. B
  3. C
  4. D

Answer: D

The common ion effect of keeps low. has an extremely small (about ) and precipitates, whereas , and have much larger values and remain dissolved.
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