Carboxylic Acids and Its Derivatives

What are $X$ and $Y$ respectively in the following reactions?

Consider the following set of reactions
What are $A$ and $B$ respectively?

Which of the following can undergo Hell-Volhard-Zelinsky reaction?

What is $C$ in the given sequence of reactions?

Formic acid on heating with concentrated $\mathrm{H}_{2} \mathrm{SO}_{4}$ at 373 K gives $X$, a colourless substance and $Y$, a good reducing agent. The number of $\sigma$ and $\pi$ bonds in $X, Y$ are respectively

In the given reaction sequence sequence, $Z$ is

$\mathrm{NH}_2 \mathrm{CONH}_2+2 \mathrm{H}_2 \mathrm{O} \rightarrow[\mathrm{X}] \rightleftharpoons 2 \mathrm{NH}_3+\mathrm{H}_2 \mathrm{O}+[\mathrm{Y}]$
The hybridisation of carbon in $X$ and $Y$ respectively are

In the following reaction ' $C$ ' is an aromatic compound having substitutents $D$ and $E$. What are $D$ and $E$ ?

The correct order of $\mathrm{p} K_a$ of the following is
\(\underset{\mathrm{I}}{\mathrm{CCl}_3 \mathrm{COOH}} \quad \underset{\mathrm{II}}{\mathrm{CF}_3 \mathrm{COOH}}\)
$$ \underset{\text { III }}{\mathrm{NO}_2 \mathrm{CH}_2 \mathrm{CO...

Which of the following set of compounds react with $\mathrm{NaHCO}_3$ ?

The major product of the following reactions

The reagent that can reduce the carboxylic acid group to the corresponding alcohol is

$n$ - propanol on treatment with concentrated HBr gives $P$. The product $P$ on reaction with KCN gave the product $Q$. The product $Q$ on heating with aqueous acidic solution, furnished the product $R$. The product ' $R$ ' is

\(\text { Predict } A \text { and } B \text { in the following reaction sequence : }\)
\(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{COOH}\)
$$ \xrightarrow[\text { Red phosphorus }]{\mathrm{Br}_2} A \xrightarrow{\ma...

\(\text { The major product formed in the following reaction is }\)

\(\text { The major product in the following reaction is }\)

\(\text { In the following reactions, } P, Q \text { and } R \text { are }\)

What is the product $R$ in the following reaction sequence?