Every question from past board papers on Mechanisms of substitution reactions (SN1/SN2), newest paper first. Open any question for its full worked answer.
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : (primary alkyl iodide drawn as zig-zag chain ending in I) undergoes \(S_N2\) reaction faster than (the corresponding alkyl chloride, zig-zag chain ending in Cl).
Reason (R) : Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the most appropriate answer from the options given below :
The compound that will undergo \(S_N1\) reaction with the fastest rate is
For the following reactions :
(a) \(CH_3CH_2CH_2Br + KOH \rightarrow CH_3CH=CH_2 + KBr + H_2O\)
(b) (CH3)2CHBr + KOH -> (CH3)2CHOH + KBr (structures shown in figure)
(c) cyclohexene + \(Br_2\) -> 1,2-dibromocyclohexane (structures shown in figure)
Which of the following statements is correct ?
Consider the reaction
\(CH_3CH_2CH_2Br + NaCN \rightarrow CH_3CH_2CH_2CN + NaBr\)
This reaction will be the fastest in
