Match the example given in Column I with the name of the reaction in Column II.
| Column I (Example) |
Column II (Reaction) |
||
|---|---|---|---|
| A. |  |
1. | Friedel-Crafts acylation |
| B. |  |
2. | HVZ reaction |
| C. |  |
3. | Aldol condensation |
| D. |  |
4. | Cannizzaro's reaction |
| E. | $\mathrm{CH}_3-\mathrm{CN} \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}]{\text {(i) } \mathrm{SnCl}_2 / \mathrm{HCl}} \mathrm{CH}_3 \mathrm{CHO}$ | 5. | Rosenmund's reduction |
| F. | $2 \mathrm{CH}_3 \mathrm{CHO} \xrightarrow{\mathrm{NaOH}} \mathrm{CH}_3-\mathrm{CH}=\mathrm{CHCHO}$ | 6. | Stephen's reaction |
A. $\rightarrow$ (5) B. $\rightarrow(4)$ C. $\rightarrow(1)$ D. $\rightarrow$ (2) E. $\rightarrow$ (6) F. $\rightarrow(3)$
Example |
Name of the Reaction |
||
|---|---|---|---|
| A. | |
1. | Rosenmund's reduction |
| B. | |
2. | Cannizzaro's reaction |
| C. | |
3. | Friedel-Crafts acylation |
| D. | |
4. | HVZ reaction |
| E. | $\mathrm{CH}_3-\mathrm{CN} \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}]{\text {(i) } \mathrm{SnCl}_2 / \mathrm{HCl}} \mathrm{CH}_3 \mathrm{CHO}$ | 5. | Stephen's reduction |
| F. | $2 \mathrm{CH}_3 \mathrm{CHO} \xrightarrow{\mathrm{NaOH}} \mathrm{CH}_3-\mathrm{CH}=\mathrm{CHCHO}$ | 6. | Aldol condensation |
Assertion (A) Formaldehyde is a planar molecule.
Reason (R) It contains $\mathrm{sp}^2$ hybridised carbon atom.
Assertion (A) Compounds containing - $\mathrm{CH0}$ group are easily oxidised to corresponding carboxylic acids.
Reason (R) Carboxylic acids can be reduced to alcohols by treatment with $\mathrm{LiAlH}_4$.
Assertion (A) The $\alpha$-hydrogen atom in carbonyl compounds is less acidic.
Reason (R) The anion formed after the loss of $\alpha$-hydrogen atom is resonance stabilised.
Assertion (A) Aromatic aldehydes and formaldehyde undergo Cannizzaro reaction.
Reason (R) Aromatic aldehydes are almost as reactive as formaldehyde.