The reactions given below, are the catalyst and corresponding process / reaction are matched, the mismatch is

Question

(a) $[RhCl(PPh_3)_2]$ : hydrogenation
(b) $TiCl_4 + Al(C_2H_5)_3$ : polymerisation
(c) $N_2O_5$ : Haber Bosch process
(d) nickel ; hydrogenation