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Polymer Technology
Comments
Question
Starting material for the production of butadiene in India is
Options
A. naphthalene
B. benzol
C. ethyl alcohol
D. phthalic anhydride
Correct Answer
ethyl alcohol
Polymer Technology problems
Search Results
1. The rate controlling step in the manufacture of silicone rubber is the
Options
A. polymer termination step.
B. condensation of siloxane to silicone.
C. initial hydrolysis of silicone monomer.
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: initial hydrolysis of silicone monomer.
2. Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Options
A. rigid foam
B. engineering plastic
C. thermosetting polymer
D. spongy rubber
Show Answer
Scratch Pad
Discuss
Correct Answer: engineering plastic
3. Orion is
Options
A. a copolymer.
B. a condensation polymer.
C. obtained by polymerising vinyl cyanide.
D. all (a), (b) and (c).
Show Answer
Scratch Pad
Discuss
Correct Answer: obtained by polymerising vinyl cyanide.
4. The repeating units of PTFE are
Options
A. Cl
2
CH-CH
3
B. F
2
C = CF
2
C. F
3
C-CF
3
D. FClC = CF
2
Show Answer
Scratch Pad
Discuss
Correct Answer: F
2
C = CF
2
5. Thermocole (expanded polystyrene) is not used for
Options
A. low temperature thermal insulation as in refrigerator and air conditioners.
B. accoustic control and ceiling for building.
C. high temperature thermal insulation in furnaces.
D. packing of delicate electronic gadgets.
Show Answer
Scratch Pad
Discuss
Correct Answer: high temperature thermal insulation in furnaces.
6. __________ moulding is used for shaping of thermosetting plastics exclusively.
Options
A. Compression
B. Injection
C. Transfer
D. Extrusion
Show Answer
Scratch Pad
Discuss
Correct Answer: Transfer
7. Liners of bags are usually made of
Options
A. polythene
B. PVC
C. polypropylene
D. polyesters
Show Answer
Scratch Pad
Discuss
Correct Answer: polypropylene
8. Pick out the wrong statement.
Options
A. For the manufacture of styrene, the major raw materials are benzene and ethylene.
B. One inportant copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres.
C. Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis.
D. Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available.
Show Answer
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Discuss
Correct Answer: Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available.
9. Which of the following is an elastomer?
Options
A. Thiokol
B. Phenol formaldehyde
C. Urea formaldehyde
D. Polystyrene
Show Answer
Scratch Pad
Discuss
Correct Answer: Thiokol
10. The inter particle forces between linear chains in nylon-66 are __________ bonds.
Options
A. hydrogen
B. covalant
C. ionic
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: hydrogen
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