MHT CET2011ChemistryPolymers
Ziegler-Natta catalyst catalyses preparation of which of the following compounds?
Options
- APreparation of Ti-metal
- BPreparation of low density plastic
- CPreparation of high resistance plastic
- DPreparation of high density plastic
Correct answer
D. Preparation of high density plastic
Step-by-step solution
High density polythene (or plastic) is prepared by heating ethylene at about 330-350 ~K , under a pressure of 1-2 atm and in the presence of Ziegler-Natta catalyst. n CH ₂= CH ₂ 330-350 ~K , 1-2 ~atm Ziegler-Natta catalyst + CH ₂- CH ₂ _ n high density polythene