NEET UG CHEMISTRY MCQ: HALOALKANES AND HALO ARENES

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Understanding +4 | -1

Amongst the following which of the above are true for

{S_N}2\;

reaction?
(i) The rate of reaction is independent of the concentration of the nucleophile.

(ii) The nucleophile attacks the carbon atom on the side of the molecule opposite to the group being displaced.

(iii) the reaction proceeds with simultaneous bond formation and bond rupture

View answer and explanation

Correct option: D

(ii), (iii)

Option D ((ii), (iii)) is correct because S\N2 reactions are bimolecular, meaning the rate depends on both the substrate and nucleophile, and they proceed with inversion of configuration through a transition state.

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Which of the following compounds is an example of Freon? Which one of the following is most reactive towards aqueous

NaOH

? Which process does not occur during formation of

\mathrm{CHC}{\mathrm{l}_3}\mathrm{\;from\;\;}{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{OH\;and\;bleaching}\;

powder? For the reaction

\mathrm{RCH}_{2} \mathrm{Br}+\mathrm{I}^{-} \stackrel{\text { Acetone }}{\longrightarrow} \underset{\text { major }}{\mathrm{RCH}_{2}} \mathrm{I}+\mathrm{Br}^{-}

The correct statement is A solution of

Ni{(N{O_3})_2}

is electrolyzed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be deposited at the cathode? Most reactive compound towards nucleophilic addition among the following is