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Consider the following graph which shows heat of combustion of isomeric butenes and give answers to th given questions. Q and R are :

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Consider the following graph which shows heat of combustion of isomeric butenes and give answers to th given questions.
image
Q and R are :
A. Chain isomer
B. Geometric isomers
C. Position isomers
D. Tautomers
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Correct Answer - b
Optical purity `=(+6)/(12)xx100=50`
image % d from = 50 +25=75%
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