Question

Which formula represents a hydrocarbon?
(1) CH3I (3) CH3CH3
(2) CH3NH2 (4) CH3OH

Answer 1

Contains only Carbon and Hydrogen.

(3) CH3CH3

Answer 2

Answer: The correct answer is Option 3.

Step-by-step explanation:

Hydrocarbon is defined as the species in which a covalent bond is present between only hydrogen and carbon atoms. Presence of only hydrogen and carbon atoms is considered as a hydrocarbon.

From the given options:

Option 1:
`CH_3I`

Here, a bond is present between carbon and iodine. Thus, it is not considered as a hydrocarbon.

Option 2:
`CH_3NH_2`

Here, a bond is present between carbon and nitrogen. Thus, it is not considered as a hydrocarbon.

Option 3:
`CH_3CH_3`

Here, a bond is present between carbon and hydrogen. Thus, it is considered as a hydrocarbon.

Option 4:
`CH_3OH`

Here, a bond is present between carbon and oxygen. Thus, it is not considered as a hydrocarbon.

Hence, the correct answer is Option 3.