Identify the solvent used in the bromination of phenol to obtain $2,4,6$-tribromophenol.

When heated with $NH_3$ under pressure alone or in the presence of zinc chloride,phenols are converted into:

Explain why $ortho$-nitrophenol is more acidic than $ortho$-methoxyphenol?

Phenol $(C_6H_6O)$ $\xrightarrow{Br_2 \text{ in } CS_2}$ $X$ (Major product)
Phenol $(C_6H_6O)$ $\xrightarrow{Br_2 \text{ in } H_2O}$ $Y$ (Major product)
What are $X$ and $Y$ in the above reaction respectively?

Which of the following compounds will not give effervescence with sodium carbonate?

Rank the following compounds in order of increasing acidic strength.