Project ForgeChemical Technology
Organic Chemical Industries
GATE 2011
Medium
Match the polymerisation mechanisms in Group I with the corresponding polymers in Group II: P. Chain growth/addition polymerisation, Q. Step growth/condensation polymerisation — I. Polyethylene, II. Polyvinyl chloride, III. Polyethylene terephthalate
- AP-III; Q-I,II
- P-I,II; Q-III
- CP-II,III; Q-I
- DP-I; Q-II,III
Explanation
Polyethylene and polyvinyl chloride are both made by chain-growth (addition) polymerization of their respective monomers (P-I,II). Polyethylene terephthalate (PET) is made by step-growth (condensation) polymerization of a diol and a diacid/ester (Q-III).
Source: GATE CH 2011 (2011)
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