Which of the following is/are reduction reaction ?

Hydrogenation of alkene and alkyne

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Ozonolysis with

O_{3} / Z n

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Halogenation of alkene

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All of these

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Solution

The correct option is A Hydrogenation of alkene and alkyne
Hydrogenation is addition of Hydrogen to alkene and alkyne and therefore it is a reduction reaction.
Ozonolysis with $O_{3} / Z n$ is oxidative cleavage (addition of oxygen) and is an oxidation reaction.
Halogenation reaction of alkene increase the oxidation state of $C$ in haloalkane. and thus is an oxidation reaction.

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Similar questions

O_{3}

Z n - H_{2} O

H C l

A

B

B

A : {F e}_{2} O_{3} + C ⟶ F e + C O_{2}

B : Z n O + C ⟶ Z n + C O_{2}

C : S n O_{2} + C ⟶ S n + C O_{2}

D : P b O + C ⟶ P b + C O_{2}

O_{3}

Z n - H_{2}

N a O H / I_{2}

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