The smallest alkane that shows isomerism is _?
Correct answer: B. Butane
- A. Ethane
- B. Butane
- C. Pentane
- D. Propane
Explanation
The smallest alkane that exhibits isomerism is butane (C₄H₁₀). Butane has two structural isomers: 1. **n-Butane (normal butane):** \( \text{CH₃-CH₂-CH₂-CH₃} \) 2. **Isobutane (methyl propane or 2-methylpropane):** \( \text{CH₃-CH(CH₃)-CH₃} \) These isomers have the same molecular formula (C₄H₁₀) but different structural arrangements. n-Butane has a linear or straight-chain structure, while isobutane has a branched or methyl-branched structure. This is an example of structural isomerism. Therefore, option B is correct.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Fundamental Principles of Organic Chemistry
Organic chemistry begins with carbon compounds classified by carbon skeleton, saturation and functional group. Work includes identifying groups such as hydroxyl, carbonyl, carboxyl and amino, applying basic nomenclature, and distinguishing structural, geometric and optical isomers, where the same molecular formula does not necessarily mean the same structure or properties.
Practise Fundamental Principles of Organic Chemistry
536 free Fundamental Principles of Organic Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Fundamental Principles of Organic Chemistry questions
All of the following compounds can exist in the form of cis and trans isomers EXCEPT?:
The major portion of natural gas is:
There are two types of isomerism i.e. structural isomerism and stereolsomerism. The two main types of stereoisomerism are: Diastereomerism (including 'cis-trans isomerism and Optical Isomerism). Each non-superimposable mirror image structure is called:
Which of the following is called as refined form of mineral oil?
Gasoline produced by the fractional distillation of petroleum is:
All of the following are cyclic compounds EXCEPT?