Name the organic compound prepared in following reaction:
${CaC}_{2} + H_{2} O \to$

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Solution

Acetylene ( $C_{2} H_{2}$ ) is prepared by the action of water ( $H_{2} O$ ) on Calcium carbide ( $C a C_{2}$ ). Lumps of $C a C_{2}$ are placed in a flask fitted with a thistle funnel and a delivery tube. Water ( $H_{2} O$ ) is dropped from the funnel and the acetylene ( $C_{2} H_{2}$ ) evolved is passed through acidified Copper sulphate ( $C u S O_{4}$ ) solution to remove the impurities. It is then collected by the downward displacement of water ( $H_{2} O$ ) .
$\underset{\underset{carbide}{Calcium}}{{CaC}_{2} (s)} + \underset{Water}{2 H_{2} O (l)} \to \underset{Acetylene}{C_{2} H_{2} (g)} + \underset{\underset{hydroxide}{Calcium}}{Ca {(OH)}_{2} (s)}$

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