Question

Which is the correct option for the following reaction:

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The correct option is C

The correct option is (c).

An explanation of the correct answer:

1. Phenyl Azo-$\mathrm{\beta }$-naphthol is formed by the reaction of Diazonium salt and $\mathrm{\beta }-\mathrm{naphthol}$ with the removal of Hydrochloric acid.
2. Both the reactants are mixed and kept the temperature in the range of $0-5°\mathrm{C}$.
3. The scarlet red dye is formed which is filtered and purified by the recrystallization process with the mixture of hot water and rectified spirit.
4. Diazonium ion is attached at the para position.

The final reaction is as follows: