Question:
Which of the following are Position isomers?
Which of the following are Position isomers?
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Position isomerism means same carbon skeleton and same functional group but change in location of functional group or multiple bond.
Updated On: Jun 15, 2026
- I, III
- II, IV
- II, III
- I, IV
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The Correct Option is A
Solution and Explanation
Concept:
Position isomerism occurs when compounds have:
• Same molecular formula
• Same functional group
• Functional group or multiple bond located at different positions Example: \[ CH_3CH=CHCH_3 \] and \[ CH_2=CHCH_2CH_3 \] Both differ only in position of double bond.
Step 1: Need structural diagram. This question depends on structures labeled I, II, III and IV. Since structures are not visible in text form, exact comparison is impossible.
Step 2: General identification rule. Two compounds are position isomers if molecular formula remains same but location of substituent changes. Example: \[ 1\text{-chloropropane} \] and \[ 2\text{-chloropropane} \]
Step 3: Conclusion. Exact answer requires original structural figure. Hence cannot determine accurately from incomplete question.
• Same molecular formula
• Same functional group
• Functional group or multiple bond located at different positions Example: \[ CH_3CH=CHCH_3 \] and \[ CH_2=CHCH_2CH_3 \] Both differ only in position of double bond.
Step 1: Need structural diagram. This question depends on structures labeled I, II, III and IV. Since structures are not visible in text form, exact comparison is impossible.
Step 2: General identification rule. Two compounds are position isomers if molecular formula remains same but location of substituent changes. Example: \[ 1\text{-chloropropane} \] and \[ 2\text{-chloropropane} \]
Step 3: Conclusion. Exact answer requires original structural figure. Hence cannot determine accurately from incomplete question.
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