An incorrect statement with respect to SN1 and SN2 mechanisms for alkyl halide is
A strong nucleophile in an aprotic solvent increases the rate or favours SN2 reaction.
Competing reaction for an SN2 reaction is rearrangement.
SN1 reactions can be catalysed by some Lewis acids.
A weak nucleophile and a protic solvent increases the rate or favours SN1 reaction.
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