Multiple choice

Match the entries in Column-I (polymer additive) with those in Column-II (used as) -

Group-I
Group-II
P. 2-hydroxybenzophenone 1. UV stabiliser
Q. 2-mercaptobenzothiazole 2. Accelerator
R. Quinophthalone 3. Colourant
S. Dibromoneopentyl glycol 4. Flame retardant

  1. P - 1, Q - 2, R - 3, S - 4

  2. P - 1, Q - 3, R - 2, S - 4

  3. P - 2, Q - 1, R - 4, S - 3

  4. P - 2, Q - 3, R - 4, S - 1

  5. P - 3, Q - 1, R - 4, S - 2
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A Correct answer
Explanation

All are correctly matched. 2-hydroxybenzophenone is used as UV stabiliser for polymers. 2-mercaptobenzothiazole is used as accelerator in vulcanisation. Quinophthalone (greenish yellow) is used as colourant in vinyls and polyolefins. Dibromoneopentyl glycol (DBNPG) is a brominated flame retardant commonly used as additives during the manufacture of plastic polymers.

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