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Action of Water on Calcium Carbide

Major product...

Question

Major product of the following reaction is

Butene-1

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Butane-2

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Butane

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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 $3^{\circ} > 2^{\circ} > 1^{\circ}$ . The major product is according to the Saytzeff or Zaitsev's rule.

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The major product of the reaction of 2-butene with alkaline KMnO $_{4}$ solution is

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