List of top Chemistry Questions on reaction mechanism asked in AIEEE

The increasing order of the rate of HCN addition to compounds A-D is : (A) $HCHO$ (B) $CH_3COCH_3$ (C) $PhCOCH_3$ (D) $PhCOPh$

The increasing order of stability of the following free radicals is:

The decreasing order of nucleophilicity among the nucleophiles : (A)$CH_{3}\underset{\underset{O}{||}}{C}-O^-$ (B)$CH_3O^-$ (C) $CN^-$