Questions
1
Which of these polymers involve cross-linkages?
(I) Bakelite
(II) Polythene
(III) Melmac
(IV) Vulcanized rubber
(I) Bakelite
(II) Polythene
(III) Melmac
(IV) Vulcanized rubber
Answer:I, II, IV
2
Which are true about polymers?
Answer: They all have a repeating structural unit
5
The polymer containing strong intermolecular forces e.g., hydrogen bonding is
Answer: nylon 6,6
6
The species which can best serve as an initiator for the cationic polymerization is
Answer: AlCl3
7
Which polymer is used in the manufacture of paints and lacquers?
Answer: Glyptal
8
Which of the following statements about low-density polythene is false?
Answer:It is used in the manufacture of buckets, etc.
9
Which of the following cannot be used as a plasticizer?
A
B
C
Tricresyl phosphate
D
Di- n-octyl phthalate
Answer:
10
Passage: The polymer is a very large molecule that is made up of repeating small molecular units called monomers. The chemical reaction that unites the monomers is called polymerization. There are homopolymers, copolymers depending upon the type of monomers present in them.
Which of the following monomers will give radical polymerization most readily?
Answer:C6H5CH=CH2
Chapters
