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Formation of Imines

On reaction w...

Question

On reaction with hydroxylamine, aldehydes produce:

A

Ketoxime

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B

Hydrazone

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C

Semicarbazone

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D

aldoxime

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Solution

The correct option is D
aldoxime

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Similar questions

Q. An organic lactum A on acid hydrolysis produces B, an amino acid,.B on treatment with nitrous acid gives C. C on heating with concentrated

H_{2} S O_{4}

produces a lactone D. A can be synthesized by the reaction of cyclopentanone with hydroxylamine followed by treatment of product with concentrated

H_{2} S O_{4}

. Deduce structures of A to D.

Q. Aldehydes on reaction with

N H_{2} - N H_{2}

Q. Hydroxylamine reduces iron (III) according to the equation,

2 N H_{2} O H (a q) + 4 F e^{3 +} (a q) \to N_{2} O (g) ↑ + H_{2} O (l) + 4 F e^{2 +} (a q) + 4 H^{+} (a q)

Iron (II) thus produced is estimated by titration with a standard permanganate solution. The reaction is:

{M n O_{4}}^{-} + 5 F e^{2 +} + 8 H^{+} \to M n^{2 +} + 5 F e^{3 +} + 4 H_{2} O

10 m L

sample of hydroxylamine solution was diluted to one litre.

50 m L

of this diluted solution was boiled with excess of iron (III) solution. The resulting solution required

12 m L

0.02 M K M n O_{4}

solution for complete oxidation of iron (II). Calculate the mass of hydroxylamine in one litre of the original solution.

Q. Give balanced equations for the following reactions:
(i) Methyl magnesium bromide with ethyl alcohol.
(ii) Acetic anhydride with phosphorous pentachloride.
(iii) Acetaldehyde with hydroxylamine.

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