Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Polymers

Multiple Choice Questions

51.

The monomer of neoprene is

1,3-butadiene
2-chloro-1,3-butadiene
2-methyl-1,3-butadiene
vinyl chloride

52.

Example of a biodegradable polymer pair is

nylon-6, 6 and terylene
PHBV and dextron
bakelite and PVC
PET and polyethylene

53.

The polymer obtained with methylene bridges by condensation polymer is

PVC
buna-S
polyacrylonitrile
bakelite

54.

Identify the copolymer from the following

55.

Observe the following polymers.

I. PHBV

II. Nylon-2-nylon-6

III. Glyptal

IV. Bakelite

Biodegradable polymer(s) from the above is/ are

III
I and II
IV
III and IV

56.
Which one of the following is not used as an initiator in ionic polymerisation?

NaNH₂

SnCl₂

AlCl₃

(C₆H₅CO)₂O₂

(C₆H₅CO)₂O₂

In ionic polymensation ions/ion pairs have charge active centers i.e , ends wth ionc-center.
·: (C₆H₅CO)₂O, is a covalent compound and will not give any ionic center for chain initation, thus can not be used as an initators in ionic polymensation.