Question 1

Which of the following is not a semi-synthetic polymer?

Accepted Answer

cis-polyisoprene is natural rubber.

Question 2

Zinc acetate - antimony trioxide catalyst used in the preparation of which polymer?

Accepted Answer

Answer option index: 2

Question 3

Which of the following catalyst is used in preparation of high density polythene?

Accepted Answer

High density polythene is formed when addition polymerisation of ethene takes place in a hydrocarbon solvent in presence of catalyst such as Ziegler-Natta catalyst.

Question 4

Melamine plastic crockery is a copolymer of

Accepted Answer

Melamine plastic crockery is a copolymer of HCHO and Melamine.

Question 5

Nylon- 6,6 is obtained from

Accepted Answer

The monomer units of nylon- 6,6 are hexamethylene diamine and adipic acid.

Question 6

n ( CF _ 2 = CF _ 2 ) Benzoyl peroxide or ( NH _ 4 )_ 2 ~S _ 2 O _ 8 X Here, X is:

Accepted Answer

Here X is polytetrafluoroethylene. So, none of these i.e., option (d) is correct choice.

Polymers — Previous Year Questions & Solutions