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NEET UG CHEMISTRY MCQ: HYDROCARBONS

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Understanding +4 | -1

2-Hexyne gives trans-2-hexene on treatment with:

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Correct option: C

\mathrm{LiAl}{\mathrm{H}_4}

Option A (

\mathrm{Li}/\mathrm{N}{\mathrm{H}_3}

) is correct because the reduction of alkynes to trans-alkenes is achieved using dissolving metal reduction with lithium in liquid ammonia.

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The reaction of alkanes with halogen is explosive in the case of: A mixture of sodium benzoate and soda lime on heating produces The major product of the following reaction is

C{H_3}C \equiv CH\xrightarrow[{(ii)\;DI}]{{(i)\;DCl\;(1\;equiv.)}}

S-I : Heavy metal acetylides can be used to purify alkynes
S-II: Terminal alkynes form acetylides which are soluble in acids. Select the incorrect statement regarding A

C{H_3} - C \equiv CH + {H_2}OA

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