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Question

In the following reaction
CH3−CH2−CH2−CH3H2SO4−−−−→475 K

A
CH3CH=CHCH3 predominates
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B
CH2=CHCH2CH3 predominates
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C
Both are formed in equal amounts
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D
The amount of production depends on the nature of catalyst
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Solution

The correct option is A CH3CH=CHCH3 predominates
CH3CH2CH2CH3H2SO4−−−475 K
CH3CH=CHCH3
More symmetrical one (major product)
CH3CH2CH2CH3H2SO4−−−475 K
CH2=CHCH2CH3
Less symmetrical one or unsymmetrical (minor product)
It is based on Saytzeff’s rule. According to this more symmetrical or more alkylated alkene predominates.

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