Preparation of aldehydes and ketones

Reagent (x) is

Which of the following on heating with aqueous KOH, produces acetaldehyde?

Identify the product A, B and C

$\mathrm{H}-\mathrm{C}\equiv \mathrm{C}-\mathrm{H}\underset{1\% {\mathrm{HgSO}}_4}{\overset{20\% {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\left[\mathrm{A}\right]\stackrel{{\mathrm{CrO}}_3}{\to }\left[\mathrm{B}\right]\stackrel{{\mathrm{PCl}}_5}{\to }\left[\mathrm{C}\right]$

$1-$methylcyclohexa$-1, 3-$diene on reductive ozonolysis with $\mathrm{Zn}/{\mathrm{H}}_2\mathrm{O}$ yields products A and B.The total number of ${\mathrm{sp}}^2$hybridized carbons in A and B are

Which of the following is not synthesized by Rosenmund reduction:

Predict the product of the following conversion:

${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{OH}\stackrel{ \mathrm{PCC} }{\to }?$

The Grignard's reagent used to convert Benzonitrile to acetophenone (benzophenone) is:

In the following reaction, $\mathrm{P}$ gives two products $\mathrm{Q}$ and $\mathrm{R}$ each in $40\%$ yield.

If the reaction is carried out with $420 \mathrm{mg}$ of $\mathrm{P}$, the reaction yields $108.8 \mathrm{mg}$ of $\mathrm{Q}$. The amount of $\mathrm{R}$ produced in the reaction is closest to

Benzene reacts with acetyl chloride in the presence of anhydrous ${\mathrm{AlCl}}_3$, we get Aceto_____ as the product.

What are $\mathrm{A}$ and $\mathrm{B}$ in the following reaction sequence?
Propionitrile $+\mathrm{A}⟶\mathrm{B}\stackrel{{\mathrm{H}}_3\mathrm{O}}{⟶}$ propiophenone

The major product(s) in the following reactions is/are

The products $\mathrm{P}$ and $\mathrm{Q}$ of the following reactions, respectively are:

On the bases of following information answer the given two questions.

Which amongst the following is correct statement.

Structure of$‘\mathrm{A}’$ and type of isomerism in the above reaction are respectively.

Which of the following compounds will give butanone on oxidation with alkaline${\mathrm{KMnO}}_4$solution?

Predict the products of following conversion.

Predict the products of following conversions.

Predict the products of following conversion.

Write the structures and IUPAC names of ketones produced by Friedel-Crafts acylation of benzene with ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COCl}$.