Amines Test

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Amines Test - 44

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Weekly Quiz Competition

Question 1
1 / -0

$${ C }_{ 3 }{ H }_{ 9 }N$$ represents

A
primary amine

B
secondary amine

C
tertiary amine

D
all of these

Solution

this compound have all 3 type of amine
Question 2
1 / -0

The correct increasing order of basic strengths in,
$$CH_3CH_2CN$$,
$$CH_3CH_2NH_2$$,
$4CH_3N=CHCH_3$$ is:

A
$$CH_3N=CHCH_3,CH_3CH_2NH_2,CH_3CH_2CN$$

B
$$CH_3CH_2NH_2,CH_3N=CHCH_3,CH_3CH_2CN$$

C
$$CH_3CH_2CN,CH_3N=CHCH_3,CH_3CH_2NH_2$$

D
$$CH_3CH_2CN,CH_3CH_2NH_2,CH_3N=CHCH_3$$

Solution

$$CH_3CH_2CN,CH_3N=CHCH_3,CH_3CH_2NH_2$$
the correct order is
Question 3
1 / -0

Which of the following is the least basic amine?

A
Methylamine

B
Ethylamine

C
Diethylamine

D
Aniline

E
Benzylamine

Solution

following compound aniline is least basic amine
Question 4
1 / -0

Mark the correct statement:

A
methylamine is slightly acidic

B
methylamine is less basic than ammonia

C
methylamine is more basic than ammonia

D
methylamine forms salts with alkalies

Solution

methylamine is more basic than ammonia because methyl group are present inductive effect
Question 5
1 / -0

The correct order of basic nature of $$CH_3NH_2,(CH_3)_2NH,(CH_3)_3N$$ and $$NH_3$$ is:

A
$$CH_3NH_2>(CH_3)_2NH>(CH_3)_3N>NH_3$$

B
$$(CH_3)_3N>(CH_3)_2NH>CH_3NH_2>NH_3$$

C
$$(CH_3)_2NH>CH_3NH_2>(CH_3)_3N>NH_3$$

D
$$NH_3>(CH_3)_3N>CH_3NH_2>(CH_3)_2NH$$

Solution

$$(CH_3)_2NH>CH_3NH_2>(CH_3)_3N>NH_3$$
correct answer
Question 6
1 / -0

Comparing basic strength of $$NH_3$$, $$CH_3NH_2$$ and $$C_6H_5NH_2$$, it may be concluded that:

A
basic strength remains unaffected

B
basic strength of $$NH_3$$ is highest

C
basic strength of alkylamine is lowest

D
basic strength of arylamine is lowest

Solution

basic strength of arylamine is lowest
because of present in amine bond
Question 7
1 / -0

Choose the correct order for the boiling points of amines:

A
$${ CH }_{ 3 }\ddot { N } { H }_{ 2 }>({ CH }_{ 3 })_{ 2 }\ddot { N } H>(CH_{ 3 })_{ 3 }\ddot { N } $$

B
$$({ CH }_{ 3 })_{ 2 }\ddot { N } H>(CH_{ 3 })_{ 3 }\ddot { N } >{ CH }_{ 3 }\ddot { N } { H }_{ 2 }$$

C
$$(CH_{ 3 })_{ 3 }\ddot { N } <{ CH }_{ 3 }\ddot { N } { H }_{ 2 }<({ CH }_{ 3 })_{ 2 }\ddot { N } H$$

D
$$C{ H }_{ 3 }\ddot { N } { H }_{ 2 }<({ CH }_{ 3 })_{ 2 }\ddot { N } H<(CH_{ 3 })_{ 3 }\ddot { N } $$

Solution

$${ CH }_{ 3 }\ddot { N } { H }_{ 2 }>({ CH }_{ 3 })_{ 2 }\ddot { N } H>(CH_{ 3 })_{ 3 }\ddot { N } $$
Question 8
1 / -0

What is the_decreasing order of basicity of pri., sec., tert., ethyl amines and $$NH_3?$$

A
$$NH_3>C_2H_5NH_2>(C_2H_5)_2NH>(C_2H_5)_3N$$

B
$$(C_2H_5)_3N>(C_2H_5)_2NH>C_2H_5NH_2>NH_3$$

C
$$(C_2H_5)_2NH>C_2H_5NH_2>NH_3>(C_2H_5)_3N>NH_3$$

D
$$(C_2H_5)_2NH>C_2H_5NH_2>NH_3>(C_2H_5)_3N$$

Solution

$$(C_2H_5)_2NH>C_2H_5NH_2>NH_3>(C_2H_5)_3N$$
this option is correct answer
Question 9
1 / -0

The boiling points of amines and their corresponding alcohols and acids vary in the order:

A
$$RCH_2NH_2>RCOOH>RCH_2OH$$

B
$$RCH_2NH_2>RCH_2OH>RCOOH$$

C
$$RCH_2NH_2$$ $$<$$ $$RCOOH$$ $$<$$ $$RCH_2OH$$

D
$$RCH_2NH_2$$ $$<$$ $$RCH_2OH$$ $$<$$ $$RCOOH$$

Solution

$$RCH_2NH_2$$ $$<$$ $$RCH_2OH$$ $$<$$ $$RCOOH$$
Hence D is correct
Question 10
1 / -0

Among following the weakest base is:

A
$$C_6H_5CH_2NH_2$$

B
$$C_6H_5CH_2NHCH_3$$

C
$$O_2N-CH_2NH_2$$

D
$$CH_3NHCHO$$

Solution

$$O_2N-CH_2NH_2$$ No2 is electron withdrowing group so this is week base

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Amines Test - 44

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Amines Test - 44

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Question 1

primary amine

secondary amine

tertiary amine

all of these

Solution

Question 2

$$CH_3N=CHCH_3,CH_3CH_2NH_2,CH_3CH_2CN$$

$$CH_3CH_2NH_2,CH_3N=CHCH_3,CH_3CH_2CN$$

$$CH_3CH_2CN,CH_3N=CHCH_3,CH_3CH_2NH_2$$

$$CH_3CH_2CN,CH_3CH_2NH_2,CH_3N=CHCH_3$$

Solution

Question 3

Methylamine

Ethylamine

Diethylamine

Aniline

Benzylamine

Solution

Question 4

methylamine is slightly acidic

methylamine is less basic than ammonia

methylamine is more basic than ammonia

methylamine forms salts with alkalies

Solution

Question 5

$$CH_3NH_2>(CH_3)_2NH>(CH_3)_3N>NH_3$$

$$(CH_3)_3N>(CH_3)_2NH>CH_3NH_2>NH_3$$

$$(CH_3)_2NH>CH_3NH_2>(CH_3)_3N>NH_3$$

$$NH_3>(CH_3)_3N>CH_3NH_2>(CH_3)_2NH$$

Solution

Question 6

basic strength remains unaffected

basic strength of $$NH_3$$ is highest

basic strength of alkylamine is lowest

basic strength of arylamine is lowest

Solution

Question 7

$${ CH }_{ 3 }\ddot { N } { H }_{ 2 }>({ CH }_{ 3 })_{ 2 }\ddot { N } H>(CH_{ 3 })_{ 3 }\ddot { N } $$

$$({ CH }_{ 3 })_{ 2 }\ddot { N } H>(CH_{ 3 })_{ 3 }\ddot { N } >{ CH }_{ 3 }\ddot { N } { H }_{ 2 }$$

$$(CH_{ 3 })_{ 3 }\ddot { N } <{ CH }_{ 3 }\ddot { N } { H }_{ 2 }<({ CH }_{ 3 })_{ 2 }\ddot { N } H$$

$$C{ H }_{ 3 }\ddot { N } { H }_{ 2 }<({ CH }_{ 3 })_{ 2 }\ddot { N } H<(CH_{ 3 })_{ 3 }\ddot { N } $$

Solution

Question 8

$$NH_3>C_2H_5NH_2>(C_2H_5)_2NH>(C_2H_5)_3N$$

$$(C_2H_5)_3N>(C_2H_5)_2NH>C_2H_5NH_2>NH_3$$

$$(C_2H_5)_2NH>C_2H_5NH_2>NH_3>(C_2H_5)_3N>NH_3$$

$$(C_2H_5)_2NH>C_2H_5NH_2>NH_3>(C_2H_5)_3N$$

Solution

Question 9

$$RCH_2NH_2>RCOOH>RCH_2OH$$

$$RCH_2NH_2>RCH_2OH>RCOOH$$

$$RCH_2NH_2$$ $$<$$ $$RCOOH$$ $$<$$ $$RCH_2OH$$

$$RCH_2NH_2$$ $$<$$ $$RCH_2OH$$ $$<$$ $$RCOOH$$

Solution

Question 10

$$C_6H_5CH_2NH_2$$

$$C_6H_5CH_2NHCH_3$$

$$O_2N-CH_2NH_2$$

$$CH_3NHCHO$$

Solution

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