The rate of $S_{N}2S\_N2$ reaction depends on the concentration of

In $S_{N}2S\_N\; 2$ reaction, the hydrolysis of alkyl halide shows

The one step exothermic reaction is

Which of the following is correct about $S_{N}2S\_N2$ mechanism?

Which of the following is not a nucleophile?

Which of the following undergoes nucleophilic substitution exclusively by $S_{N}2S\_N\; 2$ mechanism ?

Which of the following is most reactive towards nucleophilic substitution reaction ?

The stability order of carbocation is

Which of the following characteristic properties of the enantiomers is correct?

The optically inactive compound is