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Karnataka Board PUCPUC Science Class 11

Assertion (A): Pent- 1- ene and pent- 2- ene are position isomers. Reason (R): Position isomers differ in the position of functional group or a substituent.

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Question

Assertion (A): Pent- 1- ene and pent- 2- ene are position isomers.

Reason (R): Position isomers differ in the position of functional group or a substituent.

Options

  • Both A and R are correct and R is the correct explanation of A.

  • Both A and R are correct but R is not the correct explanation of A.

  • Both A and R are not correct.

  • A is not correct but R is correct.

MCQ
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Solution

Both A and R are correct and R is the correct explanation of A.

Explanation:

When two or more compounds differ in the position of substituent atom or functional group on the carbon skeleton, they are known as position isomers and this phenomenon is termed as position isomerism. Pent-2-ene and pent-l-ene are position isomers because they differ in the position of the double bond. 

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Chapter 12: Organic Chemistry Some Basic Principles and Techniques - Multiple Choice Questions (Type - I) [Page 155]

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NCERT Exemplar Chemistry [English] Class 11
Chapter 12 Organic Chemistry Some Basic Principles and Techniques
Multiple Choice Questions (Type - I) | Q 57 | Page 155

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