Question

What is the possible number of monohydroxy derivatives of a hydrocarbon consisting of five carbon atoms with one methyl group as a branch?
A. 2
B. 3
C. 4
D. 5

Answer 1

Hint: Hydrocarbons are generally organic compounds which are made up of two kinds of atoms known by hydrogen and carbon. These are generally colorless gases which have very weak odor. Hydrocarbons are generally classified into 4 categories known by alkanes, alkenes, alkynes and aromatic.

Complete answer:
Hydrocarbons generally exist in plants and trees. Monohydroxy compounds are those which have one molecule of hydroxyl group present in them. There are four possible number of monohydroxy derivatives of a hydrocarbon consisting of five carbon atoms with one methyl group as a branch which can be shown as:

This is generally a straight chain of five carbon atoms with a mono hydroxyl group.

This is another form of the compound in which one methyl group is present as a side chain atom.

In this form two methyl groups are present in side chains.

In this form the methyl group is attached with 2 carbon atoms. These all are known as the isomers of the compound.

Hence we can say that option C is the correct answer.

Note:
Isomers are generally those compounds which have the same molecular formula but the arrangement of their atoms is different in different compounds like in the given case molecule is same its formula also remains same but these are differ in the arrangement.