Tag: organic compounds with functional group containing nitrogen

Questions Related to organic compounds with functional group containing nitrogen

Which of the following is the tertiary amine ?

isomerism of amines organic compounds with functional group containing nitrogen

  1. $CH _3N(CH _3) _2$

  2. $N(CH _3) _3$

  3. A,B

  4. $CH _3NH _2$

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Correct Option: C
Explanation:

$CH _3N(CH _3) _2$ and $N(CH _3) _3$ are tertiary amines tertiary amines have no hydrogen atom and three alkyl or aryl groups attached to the nitrogen. Hence option  C is correct.

Which of the following is a secondary amine ?

isomerism of amines organic compounds with functional group containing nitrogen

  1. $CH _3CH _2NH _2$

  2. $CH _3CH _2N(CH _3) _2$

  3. $CH _3CH _2NHCH _3$

  4. $CH _3CH _2H _2CNH _2$

Show answer
Correct Option: C
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.

Which of the following is the primary amine :

isomerism of amines organic compounds with functional group containing nitrogen

  1. $CH _3NH _2$

  2. $CH _3NHCH _3$

  3. $(CH _3) _3N$

  4. None

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Correct Option: A
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.

Ethyl dimethyl amine is :

isomerism of amines organic compounds with functional group containing nitrogen

  1. tertiary amine

  2. primary amine

  3. secondary amine

  4. None

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Correct Option: A
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.

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

isomerism of amines organic compounds with functional group containing nitrogen

  1. carbon and nitrogen

  2. carbon, nitrogen and hydrogen

  3. carbon, nitrogen and oxygen

  4. carbon, nitrogen, hydrogen and oxygen

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Correct Option: B
Explanation:
Tertiary amine has 3 carbon atoms bonded directly to the nitrogen atom
Thus the elements are carbon, nitrogen and hydrogen.

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

isomerism of amines organic compounds with functional group containing nitrogen

  1. Chain isomerism

  2. Metamerism

  3. Position isomerism

  4. All of the above.

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Correct Option: D
Explanation:

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

Phenyl amine is involved importantly in synthesis of:

isomerism of amines organic compounds with functional group containing nitrogen

  1. dyes

  2. medicines

  3. drugs

  4. capsules

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Correct Option: A
Explanation:

Phenyl amines are important industrially for the production of dyes.

In the given compound A,C and A,D are exbhits which of the following isomerism :

(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 $(2^o)$

isomerism of amines organic compounds with functional group containing nitrogen

  1. Chain isomerism

  2. position isomerism

  3. Functional isomerism

  4. Metamerism

Show answer
Correct Option: A
Explanation:

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