Which of the following reagents are used to react with diazonium salt \((Ph-N^+_2X^-)\) to get the product given against each reagent.
| (a) HBF4 |
Ph – F |
| (b) CuCN/KCN |
Ph – CN |
| (c) CuCl2/HCl |
Ph – Cl |
| (d) Ph – NH2 |
Ph – N = N – Ph |
(1) (a) and (b)
(2) (a), (b) and (c)
(3) (a), (b), (c) and (d)
(4) (a), (b) and (d)
