(D) (15,000-30,000 psi)
58. Polyepropylene is prepared by polymerisation of propylene in the presence of ........... Catalyst.
(A) Ziegler and Natta
(B) Oxygen
(C) Peroxide
(D) None of these
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Answer:
I think A. is correct option....
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ANSWER:
(A) Ziegler and Natta
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