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Thermo setting plastics are formed by _________

(a) Step polymerisation

(b) Suspension polymerisation

(c) Emulsion polymerisation

(d) Co-ordination polymerisation

The question was posed to me in class test.

I need to ask this question from Plastics topic in section High Polymers and Plastics of Applied Chemistry

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The correct option is (a) Step polymerisation

Explanation: Thermo setting plastics are formed by the step polymerisation. The thermo plastic resins are formed by chain polymerisation.

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