162. Which of the following does not undergo Cannizzaro reaction?
A
Benzaldehyde
B
2-Methylpropanal
C
$$p$$ - Methoxybenzaldehyde
D
2, 2-Dimethylpropanal
Answer :
2-Methylpropanal
163. Which among the following is most reactive to give nucleophilic addition?
A
$$FC{H_2}CHO$$
B
$$ClC{H_2}CHO$$
C
$$BrC{H_2}CHO$$
D
$$IC{H_2}CHO$$
Answer :
$$FC{H_2}CHO$$
164. Hydrogenation of benzoyl chloride in the presence of $$Pd$$ on $$BaS{O_4}$$ gives
A
Benzyl alcohol
B
Benzaldehyde
C
Benzoic acid
D
Phenol
Answer :
Benzaldehyde
165. Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
A
$$MeCOCl$$
B
$$MeCHO$$
C
$$MeCOOMe$$
D
$$MeCOOCOMe$$
Answer :
$$MeCOCl$$
166.
Which of the following compounds will give a coloured crystalline compound with
A
$$C{H_3}COCl$$
B
$$C{H_3}COO{C_2}{H_5}$$
C
$$C{H_3}COC{H_3}$$
D
$$C{H_3}CON{H_2}$$
Answer :
$$C{H_3}COC{H_3}$$
167. Tollen’s reagent and Fehling solutions are used to distinguish between
A
acids and alcohols
B
alkanes and alcohols
C
ketones and aldehydes
D
$$n$$ - alkanes and branched alkanes
Answer :
ketones and aldehydes
168. The condensation product of benzaldehyde and acetone is
A
$${C_6}{H_5}CH = C{\left( {C{H_3}} \right)_2}$$
B
\[{{C}_{6}}{{H}_{5}}C{{H}_{2}}\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,CH=C{{H}_{2}}\]
C
\[{{C}_{6}}{{H}_{5}}\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,CH=CH-C{{H}_{3}}\]
D
\[{{C}_{6}}{{H}_{5}}-CH=CH\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,C{{H}_{3}}\]
Answer :
\[{{C}_{6}}{{H}_{5}}-CH=CH\overset{\begin{smallmatrix}
O \\
\parallel
\end{smallmatrix}}{\mathop{-C-}}\,C{{H}_{3}}\]
169. Propanone can be prepared from ethyne by
A
passing a mixture of ethyne and steam over a catalyst, magnesium at $${420^ \circ }C$$
B
passing a mixture of ethyne and ethanol over a catalyst zinc chromite
C
boiling ethyne with water and $${H_2}S{O_4}$$
D
treating ethyne with iodine and $$NaOH$$
Answer :
passing a mixture of ethyne and steam over a catalyst, magnesium at $${420^ \circ }C$$
170. Which of the following compounds will give butanone on oxidation with alkaline $$KMn{O_4}$$ solution?
A
Butan-1-ol
B
Butan-2-ol
C
Both of these
D
None of these
Answer :
Butan-2-ol