Amines Test

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Amines Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

The following reaction takes place in the presence of

A
NaOH/Pd

B
H₂/Pd

C
HCl/Pd

D
None of these

Solution

−NO₂ group is reduced to –NH₂ using H₂/Pd.
Question 2
1 / -0

The molecular formula of ethyl acetate is

A
C₄H₈O

B
C₄H₈O₂

C
C₅H₁₀O₂

D
C₅H₈O₂

Solution

Its molecular formula is C₄H₈O₂
Question 3
1 / -0

Which of the following is a tertiary amine?

A
Diphenhydramine

B
Adrenaline

C
Ephedrine

D
Novocaine

Solution

Diphenhydramine is an antihistamine mainly used to treat allergies. It can also be used for insomnia, symptoms of the common cold, tremor in parkinsonism, and nausea. It is used by mouth, injection into a vein, injection into a muscle, or applied to the skin.
Question 4
1 / -0

Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds.

A
Amines

B
Esters

C
Amides

D
Nitriles

Solution

RNO₂+Fe/HCl ->RNH₂
Question 5
1 / -0

Which one of the following is used to increase blood pressure

A
Ephedrine

B
Novocain

C
Benadryl

D
None of these

Solution

Ephedrine is used to increase blood pressure
Question 6
1 / -0

Which of the following is a tertiary amine?

A
cyclohexylamine

B
N,N – dimethylaniline

C
N – ethyl – 1 – propanamine

D
3 – pentanamine

Solution

C₆H₅N(CH,)₂ this is tertiary amine.
Question 7
1 / -0

When methylamine reacts with HCl the product is

A
methyl ammonium chloride

B
methane and methyl chloride

C
methonoate chloride

D
methylammonia

Solution

MeNH₂ reacts with HCl to form salt.
Question 8
1 / -0

For producing amines, the reaction of nitro compounds with iron scrap is preferred because

A
HCl is very cheap

B
HCl is formed on hydrolysis of FeCl₂

C
Not too much HCl is formed in the reaction

D
Nitro compounds are easily available

Solution

This reaction is preferred because on reduction of nitro compouns to amine , Fe will get oxidize to Fe(II) a which on hydrolysis will produce HCl which is required in the reaction
Question 9
1 / -0

Diazonium salts are used in the preparation of

A
Hormones

B
Vitamins

C
Dyes

D
Proteins

Solution

Diazonium reacts with phenols and napthols to form dyes.
Question 10
1 / -0

When pyridine is treated with a mixture of nitric and sulfuric acids, the major product is:

A
3 – aminopyridine

B
2 – nitropyridine

C
3 – nitropyridine

D
4 – aminopyridine

Solution

In pyridine EAS take splace at 3 position.
Question 11
1 / -0

Direct nitration of aniline yields significant amount of meta derivative. To obtain more p – nitro derivative, one or more of the below can be done

A
reacting with acetic anhydride

B
acetylation reaction

C
controlling the nitration reaction

D
all of these

Solution

Meta isomer form because of converstion of aniline to anilium ion which is META director. This can be prevented by acetylation of anilie by reaction with acetyl chloride or acetylanhydride.
Question 12
1 / -0

Quaternary ammonium salt is formed

A
by serial nucleophilic substitution of the product

B
By treating an alkyl or benzyl halide with ammonia

C
By nucleophilic substitution reaction

D
all of these

Solution
Question 13
1 / -0

Which of the following amines is most soluble in water?

A
(CH₃CH₂CH₂)₂NH

B
ethylamine

C
pyrrolidine

D
(CH₃CH₃)₃N

Solution

Because to maximum hydrogen bonding.
Question 14
1 / -0

Sec – Butylamine is the common name of what compound?

A
2 – butanamine

B
N – ethylethanamine

C
1 – butanamine

D
N – methyl – 1 – propanamine

Solution

IUPAC is 2-butanamine.
Question 15
1 / -0

Aniline does not undergo Friedel – Crafts reaction

A
Anilium ion deactivates any further reaction.

B
aluminium chloride, the catalyst reacts with NH₂ group

C
nitrogen of aniline acquires positive charge

D
all of these

Solution

NH₂ has lp of electron which reacts with AlCl₃ or other catalyst that we add to form anilium ion.
Question 16
1 / -0

The main product formed by treating an alkyl or benzyl halide with excess ammonia

A
Mixed

B
Tertiary

C
Secondary

D
Primary

Solution

The major product is primary amine.
Question 17
1 / -0

The Hofmann elimination proceeds via a(n) __________ pathway.

A
SN₂

B
E₂

C
E₁

D
SN₁

Solution

Hoffmann elimination follows E₂ mechanism.
Question 18
1 / -0

Arrange the following in order of increasing basicity: aniline, p – nitroaniline, p – toluidine,and p – methoxyaniline

A
p – methoxyaniline p – nitroaniline < aniline < p – toluidine

B
p – nitroaniline < aniline < p – toluidine < p – methoxyaniline

C
aniline < p – methoxyaniline p – nitroaniline < p – toluidine

D
p – nitroaniline < aniline< p – methoxyaniline < p – toluidine

Solution

-OMe group at p position will increase the basicity more tha normal –CH₃ group at p position. While presence of –NO₂ at position will decrease the basicity.
Question 19
1 / -0

Aniline does not undergo Friedel – Crafts reaction

A
Anilium ion deactivates any further reaction.

B
aluminium chloride, the catalyst reacts with NH₂ group

C
nitrogen of aniline acquires positive charge

D
all of these

Solution

NH2 has lp of electron which reacts with AlCl3 or other catalyst that we add to form anilium ion.
Question 20
1 / -0

Hinsberg’s reagent reacts with primary and secondary amines to form sulphonamides. This reagent is also known as

A
N Methylbenzamide

B
p – toluenesulphonyl chloride

C
None of these

D
Benzenesulphonyl chloride

Solution

C₆H₅SO₂Cl this is benzenesulphonyl chloride or hinsberg reagent.

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Amines Test - 3

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Amines Test - 3

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Question 1

NaOH/Pd

H2/Pd

HCl/Pd

None of these

Solution

Question 2

C4H8O

C4H8O2

C5H10O2

C5H8O2

Solution

Question 3

Diphenhydramine

Adrenaline

Ephedrine

Novocaine

Solution

Question 4

Amines

Esters

Amides

Nitriles

Solution

Question 5

Ephedrine

Novocain

Benadryl

None of these

Solution

Question 6

cyclohexylamine

N,N – dimethylaniline

N – ethyl – 1 – propanamine

3 – pentanamine

Solution

Question 7

methyl ammonium chloride

methane and methyl chloride

methonoate chloride

methylammonia

Solution

Question 8

HCl is very cheap

HCl is formed on hydrolysis of FeCl2

Not too much HCl is formed in the reaction

Nitro compounds are easily available

Solution

Question 9

Hormones

Vitamins

Dyes

Proteins

Solution

Question 10

3 – aminopyridine

2 – nitropyridine

3 – nitropyridine

4 – aminopyridine

Solution

Question 11

reacting with acetic anhydride

acetylation reaction

controlling the nitration reaction

all of these

Solution

Question 12

by serial nucleophilic substitution of the product

By treating an alkyl or benzyl halide with ammonia

By nucleophilic substitution reaction

all of these

Solution

H₂/Pd

C₄H₈O

C₄H₈O₂

C₅H₁₀O₂

C₅H₈O₂

HCl is formed on hydrolysis of FeCl₂

(CH₃CH₂CH₂)₂NH

(CH₃CH₃)₃N

aluminium chloride, the catalyst reacts with NH₂ group

SN₂

E₂

E₁

SN₁

aluminium chloride, the catalyst reacts with NH₂ group