Discussion
Home ‣ Chemical Engineering ‣ Polymer Technology Comments
- Question
Which of the following is an elastomer?
Options- A. Thiokol
- B. Phenol formaldehyde
- C. Urea formaldehyde
- D. Polystyrene
- Correct Answer
- Thiokol
- 1. 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. Discuss
- 2. Liners of bags are usually made of
Options- A. polythene
- B. PVC
- C. polypropylene
- D. polyesters Discuss
- 3. __________ moulding is used for shaping of thermosetting plastics exclusively.
Options- A. Compression
- B. Injection
- C. Transfer
- D. Extrusion Discuss
- 4. Starting material for the production of butadiene in India is
Options- A. naphthalene
- B. benzol
- C. ethyl alcohol
- D. phthalic anhydride Discuss
- 5. 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. Discuss
- 6. The inter particle forces between linear chains in nylon-66 are __________ bonds.
Options- A. hydrogen
- B. covalant
- C. ionic
- D. none of these Discuss
- 7. Contact lenses for eyes are made of perspex, which is nothing but
Options- A. polymethylmethacrylate
- B. polystyrene
- C. unsaturated polyester
- D. polypropylene Discuss
- 8. Poly Vinyl chloride (PVC) is a __________ material.
Options- A. thermoplastic
- B. thermosetting
- C. fibrous
- D. chemically active Discuss
- 9. Which of the following is an inorganic polymer?
Options- A. Teflon
- B. Perspex
- C. Silicones
- D. Bakelite Discuss
- 10. The physical state in which polymers exist is
Options- A. melts & rubber like state.
- B. amorphous glassy state.
- C. partially crystalline state.
- D. all (a), (b) and (c). Discuss
Polymer Technology problems
Search Results
Correct Answer: Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available.
Correct Answer: polypropylene
Correct Answer: Transfer
Correct Answer: ethyl alcohol
Correct Answer: initial hydrolysis of silicone monomer.
Correct Answer: hydrogen
Correct Answer: polymethylmethacrylate
Correct Answer: thermoplastic
Correct Answer: Silicones
Correct Answer: all (a), (b) and (c).
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.