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Question

Major product of the following reaction is


A
Butene-1
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B
Butane-2
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C
Butane
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D
Butyne-1
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Solution

The correct option is B Butane-2

We know about dehydration.

Ethyl alcohol on reaction with excess of conc. H2SO4 gives ethylene at 170°C


The ease of dehydration is 3>2>1. The major product is according to the Saytzeff or Zaitsev's rule.


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