How do you identify a strong electrophile?

The major products $\mathrm{A}$ and $\mathrm{B}$ in the following reactions are

Given below are two statements :

Statement I : ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$ and $\mathrm{AgCN}$ both can generate nucleophile.

Statement II : $\mathrm{KCN}$ and $\mathrm{AgCN}$ both will generate nitrile nucleophile with all reaction conditions.

Choose the most appropriate option :

The indicated atom is not a nucleophilic site in

Arrange the following carbanions in order of their decreasing stability

(i) ${\mathrm{H}}_3\mathrm{C}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

(ii) $\mathrm{H}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

(iii) ${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_2^{-}$

The following compound

can readily be prepared by Williamson ether synthesis by reaction between

The correct statement regarding electrophiles is:

Which of the following statements is not correct for a nucleophile?