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JEE Mains 11-Apr-2023 Shift 1 Solved Paper
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© examsnet.com
Question : 67
Total: 90
The polymer X-consists of linear molecules and is closely packed. It prepared in the presence of triethylaluminium and titranium tetrachloride under low pressure. The polymer
X
is-
[11-Apr-2023 shift 1]
Polyacrylonitrile
Polytetrafluoroethane
High density polythene
Low density polythene
Validate
Solution:
Ethene undergoes addition polymerisation to high density polythene in the presence of catalyst such as AlEt 3 and
TiCl
4
(Ziegler - Natta catalyst) at a temperature of
333
K
to
343
K
and under a pressure of
6
−
7
atmosphere.
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