Raw materials required for the manufacture of __________ is acetylene
and hydrochloric acid.
(A) Phthalic anhydride
(B) Vinyl chloride
(C) Maleic anhydride
(D) Dacron
and hydrochloric acid.
(A) Phthalic anhydride
(B) Vinyl chloride
(C) Maleic anhydride
(D) Dacron