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Factors Affecting Alpha

Assertion :Io...

Question

Assertion :Ions in 5th analytical group of cations form carbonates that are insoluble in water. Reason: The solution used for testing 5th group cations is either neutral or highly acidic.

A

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

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B

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

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Ions in 5th analytical group of cations form $c a r b o n a t e s$ that are insoluble in water. The reagent usually used is ${(N H_{4})}_{2} C O_{3}$ (at around $0.2 M$ ), with a neutral or slightly basic $p H$ .
Most ions in 5th group are $B a^{+ 2}, C a^{+ 2}, S r^{+ 2} .$

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Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(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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Factors Affecting Alpha

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