Question

(B) (1000–5000 psi)
(C) (10,000–15,000 psi)
(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
59. Polytetrafluoroethylene is also known as ...........
(A) Polymer
(B) Teflon
(C) Nylon
(D) All of these​

Answer 1

58-(c) peroxide

59- (A) polymer ..................