SBR is produced by the copolymerisation of butadiene & styrene by
employing emulsion polymerisation. The weight ratio of styrene and
butadiene is maintained at
(A) 1: 3
(B) 3 : 1
(C) 1 : 2
(D) 2 : 1
employing emulsion polymerisation. The weight ratio of styrene and
butadiene is maintained at
(A) 1: 3
(B) 3 : 1
(C) 1 : 2
(D) 2 : 1