The correct match between item – I and Item –II is
Item-I | Item-II |
a) High density polythene | (i) Peroxide catalyst |
b) Polyacrylonitrile | (ii) Condensation at high temperature & pressure |
c) Novolac | (iii) Ziegler- Natta Catalyst |
d) Nylon 6 | (iv) Acid or base catalyst |
a-III,b-I, c-II,d-IV
a-II, b-IV, c-II, d-IV
a-IV, b-IV, C-I, d-III
a-III, b-I, c-IV, d-II
Natural rubber has
All trans-configuration
Alternate cis and trans configuration
Random cis and trans configuration
Random cis and trans configuration
Biodegradable polymer which can be produced from glycine and aminocapric acid is
nylon 2-nylon 6
PHBV
buna -N
buna -N
Which of the following organic compounds polymerises to form the polyester dacron?
Propylene and para HO-(C6H4)-OH
Benzoic acid and ethanol
Terephthalic acid and ethylene glycol
Terephthalic acid and ethylene glycol
C.
Terephthalic acid and ethylene glycol
Dacron, commonly known as terylene, is obtained by heating a mixture of terephthalic acid and ethylene glycol at 420-460 K in the presence of zinc acetate and antimony trioxide as a catalyst.
Which of these is not a monomer for high molecular mass silicone polymer?
MeSiCl3
Me2SiCl2
Me3SiCl
Me3SiCl