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Question

Assertion :Statement-I : NH4Cl is added in III group basic radicals to suppress the ionisation of NH4OH.
Reason: Statement-II: In the presence of a high concentration of OH− ions, basic radicals of other groups will also get precipitated in III group.


Read the above assertion and reason and choose the correct option regarding it.

A
Statement-I is true, Statement-II is true ; Statement-II is correct explanation for Statement-I.
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B
Statement-I is true, Statement-II is true ; Statement-II is NOT a correct explanation for Statement-I.
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C
Statement-I is true, Statement-II is false.
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D
Statement-I is false, Statement-II is true.
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Solution

The correct option is A Statement-I is true, Statement-II is true ; Statement-II is correct explanation for Statement-I.
NH4Cl is added in III group basic radicals to suppress the ionisation of NH4OH because in the presence of high concentration of OH ions, basic radicals of other groups will also get precipitated in III group.
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