1. Which one of the following polymers is used in making bulletproof vests?
a) Bakelite
b) Polyamides
c) Teflon
d) Polyurethane
Answer. b) Polyamides;
2. Which one of the following polymers is used for making bulletproof windows?
a) Polycarbonates
b) Polyurethanes
c) Polystyrene
d) Polyamides
Answer. a) Polycarbonates;
Polycarbonate:
3. Which of the following polymers is used to make bulletproof objects?
1. Kevlar
2. Glyptal
3. Lexan
Choose the correct answer from the code given below
a) 1 and 2
b) 2 and 3
c) 1 and 3
d) None of the above
Answer. c) 1 and 3;
4. Consider the following statements:
1. Teflon and Dacron are polymers
2. Neoprene is a synthetic rubber
3. Polythene is a polymer of polyethylene
4. Natural rubber is chloroprene
Which of the above statements is correct?
a) 1, 2, and 3
b) 1,2, and 4
c) 2,3, and 4
d) 1,3, and 4
Answer. a) 1, 2, and 3
5. A polymer used for making nonstick surface coating for utensils is
a) Polyvinyl chloride
b) Teflon
c) Polystyrene
d) Polypropylene
Answer. b) Teflon
6. Which one of the following polymers is used for the production of nonstick pans?
a) Teflon
b) Neoprene
c) P.V.C
d) Gutta Percha
Answer. a) Teflon
7. Natural rubber is a polymer of
a) Ethylene
b) Isoprene
c) Acetylene
d) Hexane
Answer. b) Isoprene;
8. Phenol is used in the manufacture of which one of the following?
a) P.V.C.
b) Nylon
c) Polystyrene
d) Bakelite
Answer. d) Bakelite;
Bakelite: Bakelite is a historic synthetic polymer known as a phenolic resin. It was one of the first plastics ever developed and was widely used in the early 20th century for applications like electrical insulators, radio cases, and decorative items.
9.
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