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Standard XII

Chemistry

Curtius and Hofmann Rearrangements

A nitrogenous...

Question

A nitrogenous substance (X) is treated with $H N O_{2}$ and the product so formed is further treated with $N a O H$ solution, which produces blue colouration. Which of the following can (X) be?

{C H}_{3} {C H}_{2} {N H}_{2}

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{C H}_{3} {C H}_{2} {N O}_{2}

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{C H}_{3} {C H}_{2} O N O

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({C H}_{3})_{2} {C H N O}_{2}

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Solution

The correct option is D $({C H}_{3})_{2} {C H N O}_{2}$
The reaction is a test for $2^{o}$ nitro compound.

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Similar questions

Q. A nitrogenous substance

A

is treated with

H N O_{2}

and the product formed is further treated with

N a O H

solution which produces blue colouration. Then,

A

will be:

Q. Assertion :When

C H_{3} - C H_{2} - C H_{2} - C H (B r) - C H_{3}

is treated with potassium tert-butoxide

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

is formed. Reason: The above reaction is

E_{2}

Q. What is the chief product obtained when n-butane is treated with bromine in the presence of light at

130^{\circ} C

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})

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})

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A nitrogenous substance (X) is treated with HNO2 and the product so formed is further treated with NaOH solution, which produces blue colouration. Which of the following can (X) be?

The correct option is D (CH3)2CHNO2The reaction is a test for 2o nitro compound.

A nitrogenous substance (X) is treated with $H N O_{2}$ and the product so formed is further treated with $N a O H$ solution, which produces blue colouration. Which of the following can (X) be?

The correct option is D $({C H}_{3})_{2} {C H N O}_{2}$
The reaction is a test for $2^{o}$ nitro compound.