Question

Phenol$+CC{l}_4+KOH\to X;$

Which of the following statement is true for $X$?

• A. It gives effervescence with $NaHC{O}_3$
• B. Gives silver mirror with Tollen's reagent
• C. Does not give the red colour with $FeC{l}_3$
• D. All of the above

Answer 1

The correct option is A It gives effervescence with $NaHC{O}_3$

The given reaction is the Reimer-Tiemann reaction.

(a) Salicylic acid gives effervescence with $NaHC{O}_3$, which is a characteristic feature of carboxylic acid. Thus, it ensures the presence of a carboxylic group in it.

(b) It doesn't give a silver mirror with Tollen's reagent because it doesn't have an aldehyde group.

(c) It gives red colour with neutral $FeC{l}_3$ as it contains enol group i.e., $=\underset{|}{C}-OH$ group.

Hence, the correct option is $\text{A}$