The major components in "Gun Metal” are :

Match List I with List II.

List I (Monomer Unit)	List II (Polymer)
(a) Caprolactum	(i) Natural rubber
(b) 2-Chloro-1, 3-butadiene	(ii) Buna-N
(c) Isoprene	(iii) Nylon 6
(d) Acrylonitrile	(iv) Neoprene

Choose the correct answer from the options given below:

Which of the following compound gives pink colour on reaction with phthalic anhydride in conc. H₂SO₄ followed by treatment with NaOH ?

(A) HOCI + H₂O₂ → H₃O⁺ + Cl^- + O₂

(B) I₂ + H₂O₂ + 2OH^- → 2I^- + 2H₂O + O₂

Choose the correct option.