How many of the following reagents can give benzene from benzene diazonium salt? H_2O, CH_3CH_2OH, H_3PO_4 , H_3PO_2 , HCHO , CH_3COOH, RCHO

How many of the following reagents can give benzene from benzene diazo

1.	How many of the following reagents can give benzene from benzene diazonium salt? H_2O, CH_3CH_2OH, H_3PO_4 , H_3PO_2 , HCHO , CH_3COOH, RCHO
Answer» SOLUTION :`H_3 PO_2 and CH_3 CH_2OH`