Solution:
Option (ii) and (iii) are the answers.
Reason:
Hypophosphorous acid (phosphinic acid) and ethanol, for example, reduce diazonium salts to arenes, which are then oxidised to phosphorous acid and ethanol, respectively.
The reagents that can be used to convert benzene diazonium chloride to benzene are __________.
(i)
(ii)
(iii)
(iv)
(i)
(ii)
(iii)
(iv)
The reagents that can be used to convert benzene diazonium chloride to benzene are __________.
(i)
(ii)
(iii)
(iv)
(i)
(ii)
(iii)
(iv)