Tag: organic compounds with functional group containing nitrogen

Quizzes (6) Questions (59)

Questions Related to organic compounds with functional group containing nitrogen

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

How may total structural isomers of $3^o$ amines are possible with the molecular formula $C _6H _{15}N$

  1. 4

  2. 7

  3. 6

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For a tertiary (3 degree) amine with formula C6H15N, the nitrogen is bonded to three alkyl groups. The possible combinations of alkyl groups (summing to 6 carbons) are: (methyl, methyl, butyl) - 2 isomers; (methyl, ethyl, propyl) - 2 isomers; (ethyl, ethyl, ethyl) - 1 isomer; (methyl, isopropyl, ethyl) - 1 isomer; (methyl, propyl, ethyl) - 1 isomer. Total is 7.

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

Which of the following statements concerning cyclic amines is correct?

  1. they can never be primary amines

  2. they are mostly aromatic compounds

  3. they can be primary or secondary amines but never tertiary amines

  4. they are only found as naturally-occurring compounds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cyclic amines can never be primary amines, as their valency is already satisfied (2 of its valency) by the carbon chain.

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

In production of phenyl amine, it is separated from reaction mixture by process of :

  1. steam distillation

  2. extraction

  3. sublimation

  4. evaporation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phenyl amines are prepared by steam distillation process. Amines are generally prepared by steam distillation process because of their volatility.

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

What is the basis for classifying amines as primary, secondary, or tertiary?

  1. The number of carbon atoms bonded directly to the nitrogen atom

  2. The number of carbon atoms bonded to a carbon bearing nitrogen

  3. The number of nitrogen atoms present

  4. The number of hydrogen atoms present
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Basic criteria for classifing amines as primary, secondary or tertiary is that chow much number of carbon atom bonded directly nitrogen atom.

If three carbon directly attached then ${ 3 }^{ 0 }$ amine
If two carbon directly attached then ${ 2 }^{ 0 }$ amine
If one carbon directly attached then ${ 1 }^{ 0 }$ amine

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.