In the reaction shown below,$Y$ is:

By passing vapours of phenol over heated $zinc$ dust will produce :

Which of the following compounds has the most acidic nature?

Choose the incorrect option based on the reaction:
$(P)$ + $CH_3-CO-Cl \rightarrow (Q)$
Where $(P)$ is salicylic acid and the structure of $(Q)$ is given as:
$(Q)$ is a benzene ring with an $-OH$ group and a $-COO-CO-CH_3$ group at ortho position.

Identify the product obtained when phenol reacts with concentrated sulphuric acid at $293 \ K$?

Arrange the following compounds in increasing order of $C-OH$ bond length: methanol,phenol,$p-$ethoxyphenol.