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Question: Answered & Verified by Expert
Ziegler-Natta catalyst catalyses preparation of which of the following compounds?
ChemistryPolymersMHT CETMHT CET 2011
Options:
  • A Preparation of Ti-metal
  • B Preparation of low density plastic
  • C Preparation of high resistance plastic
  • D Preparation of high density plastic
Solution:
2611 Upvotes Verified Answer
The correct answer is: Preparation of high density plastic
High density polythene (or plastic) is prepared by heating ethylene at about $330-350 \mathrm{~K}$, under a pressure of $1-2$ atm and in the presence of Ziegler-Natta catalyst.
$$
n \mathrm{CH}_{2}=\mathrm{CH}_{2} \frac{330-350 \mathrm{~K}, 1-2 \mathrm{~atm}}{\text { Ziegler-Natta catalyst }}+\mathrm{CH}_{2}-\mathrm{CH}_{2} \rightarrow_{n}
$$
high density polythene

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