Question

Answer the above question ​

Answer 1

When an amine group $\sf NH_3$ has two of its hydrogens substituted by alkyl or aryl, it is termed as Secondary Amine.

Similarly,

• When one of the Hydrogen is replaced by an alkyl or aryl substituent, it is called a Primary Amjne.
• When all of the Hydrogens are replaced by alkyl or aryl substituents, it is called a Tertiary Amine.

Option (1) Only one of the Hydrogen is replaced by an alkyl group.

Option (2) Here, the amine group is connected to two $\sf CH_2$ groups in a piperidine structure. $\sf (C_5H_{10} NH)$

Option (2) is correct.

Similarly, the 3rd and 4th structures are primary amines.

Answer 2

Answer:

Required Answer :-

Option (2) is correct.

Explanation :-

Others are incorrect why?

a) $\sf {NH}_{2}$ is a primary anime

c) It is also like first one but they aren't connected to each other

d) Both lines are not forming a closed figure.