Tag: isomerism of amines

Quizzes (0) Questions (22)

Questions Related to isomerism of amines

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

The common name for the compound $CH _3CH _2CH _2NH _2$ is:

  1. propylamine

  2. N-propylamine

  3. aminopropane

  4. N-aminopropane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

As it contains three saturated carbon chain and ${ 1 }^{ 0 }$  amine. So its name is propylamine propyl for $C{ H } _{ 3 }C{ H } _{ 2 }C{ H } _{ 2 }$ group.

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

In the given example B,C and B,D are :

(a) $CH _3-CH _2-CH _2 - CH _2NH _2$
Butanamine $(1^o)$

(b) $CH _3-CH _2-\overset{NH _2}{\overset{|}{C}H} - CH _3$ 
Butan-2-amine $(1^o)$

(c) $CH _3-\overset{CH _3}{\overset{|}{C}H} - CH _2-NH _2$
2-Methylpropanamine $(1^o)$

(d) $CH _3-\!\!\!\!\underset{\quad CH _3}{\underset{|}{\overset{\quad CH _3}{\overset{|}{C}}}\!\!\!\!-}NH _2$
2-methylpropan-2-amine $(1^o)$

(e) $CH _3-CH _2-CH _2-NH - CH _3$
N-methylpropanamine $(2^o)$

  1. Positional isomers

  2. Chain isomers

  3. Functional isomers

  4. Metamers
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

B,C and B,D are exbhits chain isomerism as the pairs are differed in their longest chain. Hence option B is correct.

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

Which of the following is a secondary amine ?

  1. $CH _3CH _2NH _2$
  2. $CH _3CH _2N(CH _3) _2$
  3. $CH _3CH _2NHCH _3$
  4. $CH _3CH _2H _2CNH _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$CH _3CH _2NHCH _3$ is a secondary amine. Secondary amines have one hydrogen atom and two alkyl or aryl groups attached to the nitrogen. 

Hence option C is correct.

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

Which of the following is the primary amine :

  1. $CH _3NH _2$
  2. $CH _3NHCH _3$
  3. $(CH _3) _3N$

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$CH _3NH _2$ is primaryamine. Primary amines  have two hydrogen atoms and one alkyl or aryl group attached to the nitrogen to form the amine or amino group $NH _2$. Hence option A is correct.

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

Ethyl dimethyl amine is :

  1. tertiary amine

  2. primary amine

  3. secondary amine

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ethyl dimethyl amine is tertiary amine.Ethyl dimethyl amine have no hydrogen atom and three alkyl or aryl groups attached to the nitrogen. tertiary amines have no hydrogen atom and three alkyl or aryl groups attached to the nitrogen. Hence option A is correct.

Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

The elements present in a tertiary amine with two phenyl groups are:

  1. carbon and nitrogen

  2. carbon, nitrogen and hydrogen

  3. carbon, nitrogen and oxygen

  4. carbon, nitrogen, hydrogen and oxygen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Tertiary amine has 3 carbon atoms bonded directly to the nitrogen atom
Thus the elements are carbon, nitrogen and hydrogen.
Multiple choice isomerism of amines organic compounds with functional group containing nitrogen

Which of the following type/(s) of isomerism is shown in  the amine of the formula $C _4H _{11}N$ :

  1. Chain isomerism

  2. Metamerism

  3. Position isomerism

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The amine of the formula $C _4H _{11}N$ shows chain  isomerism, metamerism, position  isomerism as well as functional group  isomerism.