MCQ
Vinegar is
- A$HCHO$
- B$HCOOH$
- C$C{H_3}CHO$
- ✓$C{H_3}COOH$
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$STATEMENT-2$: The $\mathrm{Fe}$ in $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{NO}_3 \mathrm{SO}_4\right.$ has three unpaired electrons.
| Column $I$ | Column $II$ |
| $(A)$ $Image$ | $(p)$ Racemic mixture |
| $(B)$ $Image$ | $(q)$ Addition reaction |
| $(C)$ $Image$ | $(r)$ Substitution reaction |
| $(D)$ $Image$ | $(s)$ Coupling reaction |
| $(t)$ Carbocation intermediate |

$C_2H_5-Br\overset{AgCN}{\rightarrow}A\overset{H_2/Ni}{\rightarrow}B$
Product $B$ is