Which of the following reactions is used to detect the presence of a carbonyl group?

Explain the oxidation of aldehydes and ketones by strong oxidizing agents.

Which of the following gives a positive iodoform test?

Consider the following reaction:
$H-CHO-(CH_2)_4-OH \xrightarrow{H^+} \text{Cyclic product}$
The above reaction is an example of:

An optically active alkyl bromide $C_4H_9Br$ reacts with ethanolic $KOH$ to form major compound $[A]$,which reacts with bromine to give compound $[B]$. Compound $[B]$ reacts with ethanolic $KOH$ and sodamide to give compound $[C]$. One molecule of water adds to compound $[C]$ on warming with mercuric sulphate and dilute sulphuric acid at $333 \text{ K}$ to form compound $[D]$. The functional group in compound $[D]$ will be confirmed by:

The reaction of cyclopentanone with $NaOBr$ gives which product?
$\text{Cyclopentanone} \xrightarrow{NaOBr} \text{Product}$