Question

The total number of cyclic isomers possible for hydrocarbon ${C_4}{H_6}$ is:
A. $9$
B. $5$
C. $11$
D. $12$

Answer 1

To solve this question, we must first understand Isomerism and Cyclic Isomers. Then we need to assess the compounds that are used in the formation of wine and then only we can conclude the correct answer.

Complete step by step answer:
Before we move forward with the solution of this given question, let us first understand some basic concepts:
Isomerism: is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. Chemical compounds that have identical chemical formulas but differ in properties and the arrangement of atoms in the molecule are called isomers. Therefore, the compounds that exhibit isomerism are known as isomers.
Cyclic Stereoisomers: In the case of cyclic compounds, the free single bond rotation is restricted. It is therefore important to note whether substituents are on the same side or on opposite sides of the ring.
Different stereoisomers arise from different substituent arrangements relative to the ring side, because they are incapable of becoming superimposable through conformational changes. As a result, cyclic compounds contain several specific characteristics.
Total number of cyclic isomers possible for hydrocarbon ${C_4}{H_6}$ are ‘Five’:

So, the correct answer is Option B.

Note: Stereoisomerism is a type of isomerism arising in compounds having the same chemical formula but different orientations of the atoms belonging to the molecule in three-dimensional space. The compounds that exhibit stereoisomerism are often referred to as stereoisomers. This phenomenon can be further categorized into two subtypes. Both these subtypes are briefly described in this subsection.