MCQ
Which one is Lewis acid
- A$C{l^ - }$
- ✓$A{g^ + }$
- C${C_2}{H_5}OH$
- D${S^{2 - }}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Benzene $(C_6H_6)$ $+\,C{{H}_{3}}-CH=C{{H}_{2}}\,\xrightarrow{{{H}^{\oplus }}}A\xrightarrow{{{O}_{2}}}B$ $\xrightarrow{{{H}^{\oplus }}\,/\,\Delta }C+$$\begin{matrix}
O \\
|| \\
C{{H}_{3}}-C-C{{H}_{3}} \\
\end{matrix}$
The structure of intermediate compound $'B'$ will be
(At. nos. $Mn = 25, Fe = 26, Co = 27, Ni = 28$)