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Standard X

Chemistry

Dehydrohalogenation of Dihalides

The reaction ...

Question

The reaction of $C H_{3} C H O$ and $N H_{2} - N H_{2}$ and the formation of $C H_{3} - C H = N - N H_{2}$ is an example of :

Nucleophilic substitution reaction

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Elimination reaction

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Condensation reaction

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Electrophilic substitution reaction

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Solution

The correct option is C Condensation reaction
The reaction of an aldehyde $(C H_{3} C H O)$ with hydrazine $(N H_{2} - N H_{2})$ to form hydrazone $C H_{3} - C H = N - N H_{2}$ is an condensation reaction. The reaction is as follow:
$C H_{3} C H O + N H_{2} - N H_{2} ⇌ C H_{3} - C H = N - N H_{2} + H_{2} O$
Hence the correct option is (b).

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Similar questions

Q. In the given example B,C and B,D are :

(a)

C H_{3} - C H_{2} - C H_{2} - C H_{2} N H_{2}

Butanamine

(1^{o})

(b)

C H_{3} - C H_{2} - N H_{2} | C H - C H_{3}

Butan-2-amine

(1^{o})

(c)

C H_{3} - C H_{3} | C H - C H_{2} - N H_{2}

2-Methylpropanamine

(1^{o})

(d)

C H_{3} - C H_{3} | C | - C H_{3} N H_{2}

2-methylpropan-2-amine

(1^{o})

(e)

C H_{3} - C H_{2} - C H_{2} - N H - C H_{3}

N-methylpropanamine

(2^{o})

R - C H = C H_{2} + C O + C H_{3} - N H_{2} H^{+}, 300^{o} C, 500 a t m - ---------- \to

The product formed in the above reaction is :

C H_{3} - C H_{2} - C O O H + B r_{2} P B r_{3} - -- \to C H_{3} - C | B r H - C O O H

H_{2} O, C H_{3} N H_{2} - -------- \to

C H_{3} - C | N H_{2} H - C O O H

The following sequence of reaction affords :

Q. Consider the reaction:

R C H O + {N H}_{2} {N H}_{2} \to R C H = N - {N H}_{2}

What sort of reaction is it?

Q. In the given compound A,C and A,D are exbhits which of the following isomerism :

(a)

C H_{3} - C H_{2} - C H_{2} - C H_{2} N H_{2}

Butanamine

(1^{o})

(b)

C H_{3} - C H_{2} - N H_{2} | C H - C H_{3}

Butan-2-amine

(1^{o})

(c)

C H_{3} - C H_{3} | C H - C H_{2} - N H_{2}

2-Methylpropanamine

(1^{o})

(d)

C H_{3} - C H_{3} | C | - C H_{3} N H_{2}

2-methylpropan-2-amine

(1^{o})

(e)

C H_{3} - C H_{2} - C H_{2} - N H - C H_{3}

N-methylpropanamine

(2^{o})

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The reaction of CH3CHO and NH2−NH2 and the formation of CH3−CH=N−NH2 is an example of :

The correct option is C Condensation reactionThe reaction of an aldehyde (CH3CHO) with hydrazine (NH2−NH2) to form hydrazone CH3−CH=N−NH2 is an condensation reaction. The reaction is as follow: CH3CHO+NH2−NH2⇌CH3−CH=N−NH2+H2O Hence the correct option is (b).

The reaction of $C H_{3} C H O$ and $N H_{2} - N H_{2}$ and the formation of $C H_{3} - C H = N - N H_{2}$ is an example of :