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An organic compound X having molecular formula C₃H₁₁N reacts with p-toluene sulphonyl chloride to form a compound Y that is soluble in aqueous KOH. Compound X is optically active and reacts with acety lchloride to form compound Z. Identify the compound Z

CH₃CH₂CH₂CH₂NHCOCH₃
CH₃CH₂CH(CH₃)NHCOCH₃
CH₃(CH₃)CHCH₂NHCOCH₃

82.

Diethyl amine when treated with nitrous acid yields

diethyl ammonium nitrite
ethyl alcohol
N-nitroso diethyl amine
triethyl ammonium nitrite

83.
The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is

triethylamine

trimethylamine

aniline

methylphenylamine

methylphenylamine

Secondary amines when treated with nitrous acid give yellow oily substance. So, amine 'A' is methylphenyl amine. Reaction of nitrous acid with aliphatic amines,

Liberation of N₂ gas + alcohol formation

R-NH₂ + HNO₂ → R-N⁺≡NCl^- $\overset{H_{2} O}{\to}$ ROH + N₂ + HCl

Reaction of nitrous acid with aromatic amines

Liberation of N₂ gas + Phenol formation

PhNH₂ + HNO₂ + HCl $\overset{273 - 278 K}{\to}$ Ph-N≡NCl^- → PhOH + HCl + N₂

Reaction of nitrous acid with 2° amines: With HNO₂, they give nitroso amines, which being insoluble in dilute acids separate as yellow oily compound.

R₂NH + HONO → R₂-N-N=O

N-nitroso dialkyl amine (yellow oil)

Reaction of nitrous acid with 3° amines : Aliphatic 3° amines on reaction with HONO formsoluble nitrite salts, while aromatic 3° amines form green coloured p -nitroso amines.

84.

In case of substituted aniline the group which decreases the basic strength is

-OCH₃
-CH₃
-NH₂
-C₆H₅

85.

Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?

Reaction is useful for decreasing length of carbon chain by one carbon atom
It gives tertiary amine
It gives primary amine
Aqueous or alco. KOH is used with bromine

86.

The amine, which reacts with p-toluenesulphonyl chloride to give a clear solution, which on acidification gives insoluble compound is

C₂H₅NH₂
(C₂H₅)₂NH
(C₂H₅)₃N
CH₃NHC₂H₅

87.

Which one of the following can be prepared by Gabriel phthalimide synthesis?

Aniline
o- toluidine
Benzylamine
N-methylethanamine

88.

0ne mole of hydrazine (N₂H₄) loses 10 moles of electrons in a reaction to form a new compound X. Assuming that all the nitrogen atoms in hydrazine appear in the new compound, what is the oxidation state of nitrogen in X? (Note - There is no change in the oxidation state of hydrogen in the reaction).