A hydrocarbon X with molecular formula C_4H_6 | vedclass

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(D) The hydrocarbon $(X)$ is but$-1-$yne $(CH_3-CH_2-C \equiv CH)$.$1$. It decolourises bromine water due to the presence of a triple bond.$2$. It for

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$CH_3-CH_2-C \equiv CH$

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(D) The hydrocarbon $(X)$ is but$-1-$yne $(CH_3-CH_2-C \equiv CH)$.$1$. It decolourises bromine water due to the presence of a triple bond.$2$. It forms a white precipitate with ethanolic $AgNO_3$ (Tollens' reagent) because it is a terminal alkyne,which has an acidic hydrogen.$3$. Treatment of but$-1-$yne with $HgCl_2$ in aqueous $H_2SO_4$ (hydration) produces butan$-2-$one $(CH_3-CH_2-CO-CH_3)$.$4$. Butan$-2-$one contains a methyl ketone group $(CH_3-CO-)$,which gives a positive iodoform test (yellow precipitate of $CHI_3$) when treated with $I_2$ and $NaOH$.

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