Assertion :Alums are crystalline double salts, which are soluble in water. Reason: The aq. solutions of alums have acidic character due to hydrolysis.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Alums are $M_{2} (S O_{4}) M_{2}^{'} (S O_{4})_{3} .24 H_{2} O$ .
These are less soluble in water. Their aqueous solution are acidic in nature.

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Assertion (A) o-nitrophenol is less soluble in water than the m- and p-isomers.
Reason (R) m and p-nitrophenols exist as associated molecules.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :Alums are crystalline double salts, which are soluble in water. Reason: The aq. solutions of alums have acidic character due to hydrolysis.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for AssertionAlums are M2(SO4)M′2(SO4)3.24H2O.These are less soluble in water. Their aqueous solution are acidic in nature.

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Alums are $M_{2} (S O_{4}) M_{2}^{'} (S O_{4})_{3} .24 H_{2} O$ .
These are less soluble in water. Their aqueous solution are acidic in nature.