$A \xrightarrow{KOBr} CHBr_3$
Here $A$ is:

Identify the major product of the following reaction:
$(CH_3)_3C-CH(OH)-CH_3 \xrightarrow[\Delta]{\text{conc. } H_2SO_4} \text{Major product}$

The product $(A)$ is:

Name the reagents used in the following reactions:
$(i)$ Oxidation of a primary alcohol to carboxylic acid.
$(ii)$ Oxidation of a primary alcohol to aldehyde.
$(iii)$ Bromination of phenol to $2,4,6-$tribromophenol.
$(iv)$ Benzyl alcohol to benzoic acid.
$(v)$ Dehydration of propan$-2-$ol to propene.
$(vi)$ Butan$-2-$one to butan$-2-$ol.

Ethyl alcohol will give ethyl chloride with the help of which of the following?

Which of the following substances gives a yellow precipitate with $I_2$ and alkali?