The nature of $2,4,6-$trinitrophenol is

For the given compounds,the correct order of increasing $pK_{a}$ value is:

Identify $X$ and $Y$ in the following reaction:
$X \xrightarrow{Y} \text{Benzoquinone}$

The major product of the following reaction is:

Which of the following compounds $(i)$ and $(ii)$ will not react with a mixture of $NaBr$ and $H_{2}SO_{4}$? Explain why?
$(i)$ $CH_{3}CH_{2}CH_{2}OH$
$(ii)$ Phenol (as shown in the image)

Which of the following statements is correct?