Assertion :Hydroxylamine ( $N H_{2} O H$ ) contains N and hence gives Prussian blue colour in Lassaigne's test. Reason: Hydroxylamine does not contain C, So with Na metal, $C N^{-}$ ion is not formed.

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

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 incorrect but Reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Option (D) is correct.
Assertion is wrong .It does not give positive test for $N$ ,since it does not contain $C$ .So $C N^{-}$ ion is not obtained which is an essential condition for the test for $N$ .But (R ) is correct.

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Similar questions

Q. Assertion :Hydroxylamine

(N H_{2} O H)

contains N, and hence gives Prussian blue colour in Lassaigne's test. Reason: Hydroxylamine does not contain C, so with Na metal,

C N^{⊝}

ion is not formed

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

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Assertion :Hydroxylamine (NH2OH) contains N and hence gives Prussian blue colour in Lassaigne's test. Reason: Hydroxylamine does not contain C, So with Na metal, CN− ion is not formed.Read the above assertion and reason and choose the correct option regarding it.

The correct option is D Both Assertion and Reason are incorrectOption (D) is correct.Assertion is wrong .It does not give positive test for N,since it does not contain C.So CN− ion is not obtained which is an essential condition for the test for N.But (R ) is correct.

Assertion :Hydroxylamine ( $N H_{2} O H$ ) contains N and hence gives Prussian blue colour in Lassaigne's test. Reason: Hydroxylamine does not contain C, So with Na metal, $C N^{-}$ ion is not formed.

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

The correct option is D Both Assertion and Reason are incorrect
Option (D) is correct.
Assertion is wrong .It does not give positive test for $N$ ,since it does not contain $C$ .So $C N^{-}$ ion is not obtained which is an essential condition for the test for $N$ .But (R ) is correct.