Which of the following is not suitable for the polymerisation of ethene to form high-density polythene?(a) Presence of Ziegler-Natta catalyst(b) Temperature of 500K(c) Pressure of 7 atmospheres(d) Hydrocarbon solventThe question was asked in final exam.I would like to ask this question from Types of Polymerisation Reactions topic in section Polymers of Chemistry – Class 12

Which of the following is not suitable for the polymerisation of ethen

1.	Which of the following is not suitable for the polymerisation of ethene to form high-density polythene?(a) Presence of Ziegler-Natta catalyst(b) Temperature of 500K(c) Pressure of 7 atmospheres(d) Hydrocarbon solventThe question was asked in final exam.I would like to ask this question from Types of Polymerisation Reactions topic in section Polymers of Chemistry – Class 12
Answer» Correct choice is (B) Temperature of 500K To elaborate: HDP is formed when polymerisation of C2H4 takes place through addition in a hydrocarbon SOLVENT with Ziegler-Natta CATALYST at temperature of 333-343K and under a pressure of 6-7 atmospheres. Temperatures and pressure higher than this will FAVOUR the formation of LDP.

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