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Byju's Answer
Standard XII
Chemistry
What Not to Do with Grignard Reagents
Which of the ...
Question

Which of the following amines will give primary alcohol with NaNO2/Conc. HCl:

(a) CH3−CH2−C|CH3−NH2

(b) CH3−CH3|C|CH3−NH2

(c) CH3−C|CH3−CH2−CH2−NH2
(d) All of these

A
a
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B
b
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C
c
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D
d
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Solution

The correct option is C c
(c) CH3−C|CH3−CH2−CH2−NH2 For getting a primary alcohol, the aliphatic amine should have the –NH2 group on a primary carbon atom.

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Q. Which of the following amines will give primary alcohol with NaNO2/Conc. HCl:

(a) CH3−CH2−C|CH3−NH2

(b) CH3−CH3|C|CH3−NH2

(c) CH3−C|CH3−CH2−CH2−NH2
(d) All of these

Q. Which of the following reaction is example of SN2 reaction using conc. HCl:
(a) CH3−CH2−OHAnhyZnCl2/△−−−−−−−−−→CH3−CH2−Cl

(b) CH3−CH3|C|CH3−CH2OHAnhyZnCl2/△−−−−−−−−−→CH3−CH1|C|CH3−CH2−CH3

(c) CH3−OH|C|CH3−CH3AnhyZnCl2/△−−−−−−−−−→CH3−Cl|C|CH3−CH3

(d) CH2=CH−CH2−OHAnhyZnCl2/△−−−−−−−−−→CH2=CH−CH2−Cl

Q. Which of the following reaction is example of SN2 reaction using conc. HCl:
(a) CH3−CH2−OHAnhyZnCl2/△−−−−−−−−−→CH3−CH2−Cl

(b) CH3−CH3|C|CH3−CH2OHAnhyZnCl2/△−−−−−−−−−→CH3−CH1|C|CH3−CH2−CH3

(c) CH3−OH|C|CH3−CH3AnhyZnCl2/△−−−−−−−−−→CH3−Cl|C|CH3−CH3

(d) CH2=CH−CH2−OHAnhyZnCl2/△−−−−−−−−−→CH2=CH−CH2−Cl

Q. The order of reactivity of following alcohols with halogen acids is:

(A) CH3CH2−CH2−OH

(B) CH3−CH2−C|CH3H−OH

(C) CH3−CH2−CH3|C|CH3−OH

Q. In the given compound A,C and A,D are exbhits which of the following isomerism :
(a) CH3−CH2−CH2−CH2NH2
Butanamine (1o)

(b) CH3−CH2−NH2|CH−CH3
Butan-2-amine (1o)

(c) CH3−CH3|CH−CH2−NH2
2-Methylpropanamine (1o)

(d) CH3−CH3|C|−CH3NH2
2-methylpropan-2-amine (1o)

(e) CH3−CH2−CH2−NH−CH3
N-methylpropanamine (2o)

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