Name the intermediate species formed in the following reactions :
(a) `CH_3 CH_2 - underset (oplus) N -= underset (ddot) N rarr I + :N -= N:`
(b) `CH_3 CH_2 -C -= C- H + overset (oplus)K overset (Theta)N H_2 rarr II + NH_3`
( c) `Ph -CH = CH - Me + HBr rarr III + Br^(Ө)`
(d) `Ph-overset(Ph)overset(|)underset(OH)underset(|)(C)-CH_(3)+H^(o+) rarr IV +H_(2)O`
( e)`CH_3 CH_2 underset (ddot) overset (ddot) O H overset (-overlinee)rarr V rarr VI + .CH_3`
(f) `CH_3-ddot(N) =ddot(N) -CH_(3) overset(Delta)rarr VIII +ZnI_(2)`
(h) `PhCH_2C1 + A1C1_3 rarr IX + [A1C1]^(Ө)`
(i) `CH_3 - C -= C - CH_3 + Li underset (C_2H_5 OH) overset (liq. NH_3)rarr X + Li^(oplus)`.

Explanation

(a) (I) `CH_3 C overset (oplus)H_2` (Carbocation)
(b) (II) `CH_3 CH_2 - C -= C^(Ө) K^(oplus)` (Carbanion)
( c) (III) `Ph C overset (oplus) H - CH_2 Me(2^@` Benzylic carbocation)
(d) (IV) `Ph-overset(Ph)overset(|)underset(o+)(C)-CH_(3) (3^(@)` Benylic carbocation)
( e) (V)
(f) (VII) `2 dot C H_3` (free radical)
(g) Simmons-Smith reaction
(VIII) `(CH_3 CH : )` (singlet carbene)
(h) (IX) `Ph C overset (oplus) H_2` (Benzy1 carbocation)
(i) .