Aldehydes Ketones and Carboxylic Acids — JEE Main PYQs

In the following sequence of reactions:

Toluene $\stackrel{{\mathrm{KMnO}}_4}{\to }$ A $\stackrel{{\mathrm{SOCl}}_2}{\to }$ B $\underset{{\mathrm{BaSO}}_4}{\overset{{\mathrm{H}}_2/\mathrm{Pd}}{\to }}$ C,

The product C is:

An organic compound $A$ upon reacting with ${\mathrm{NH}}_3$ gives $B$. On heating $B$ gives $C$. $C$ in presence of KOH reacts with ${\mathrm{Br}}_2$ to give ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2$. A is

Iodoform can be prepared from all except :

In the given transformation, which of the following is the most appropriate reagent ?

Trichloroacetaldehyde was subjected to Cannizzaro's reaction by using NaOH . The mixture of the products contains sodium trichloroacetate and another compound. The other compound is :

Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above reaction is :

The strongest acid amongst the following compounds is :

Silver Mirror test is given by which one of the following compounds?

A liquid was mixed with ethanol and a drop of concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ was added. A compound with a fruity smell was formed. The liquid was :

In Cannizzaro reaction given below
…

The increasing order of the rate of HCN addition to compounds A-D is
(A) HCHO
(B) ${\mathrm{CH}}_3{\mathrm{COCH}}_3$
(C) ${\mathrm{PhCOCH}}_3$
(D) PhCOPh

Among the following the one that gives positive iodoform test upon reaction with ${\mathrm{I}}_2$ and NaOH is

The correct order of increasing acid strength of the compounds
(a) ${\mathrm{CH}}_3{\mathrm{CO}}_2\mathrm{H}$
(b) ${\mathrm{MeOCH}}_2{\mathrm{CO}}_2\mathrm{H}$
(c) ${\mathrm{CF}}_3{\mathrm{CO}}_2\mathrm{H}$
(d) (see structure)
is

Among the following acids which has the lowest ${\mathrm{pK}}_{\mathrm{a}}$ value?

Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. The compound formed is generally known as

p-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

The reaction $\mathrm{R}-\mathrm{CO}-\mathrm{X}+{\mathrm{Nu}}^{-}⟶\mathrm{R}-\mathrm{CO}-\mathrm{Nu}+{\mathrm{X}}^{-}$ is fastest when X is

Rate of the reaction

is fastest when Z is

Consider the acidity of the carboxylic acids:
(1) PhCOOH
(2) $\mathrm{o}-{\mathrm{NO}}_2{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{COOH}$
(3) $\mathrm{p}-{\mathrm{NO}}_2{\mathrm{C}}_6{\mathrm{H}}_4\mathrm{COOH}$
(4) …

On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is

Which one of the following reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?

Which of the following undergoes reaction with $50\%$ sodium hydroxide solution to give the corresponding alcohol and acid?