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- Question
Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is
Options- A. nylon-66
- B. teflon
- C. polyester
- D. bakelite
- Correct Answer
- teflon
- 1. Radiation pyrometers as compared to thermocouples
Options- A. has a slower speed of response.
- B. can measure higher temperature.
- C. can't measure the temperature of moving objects.
- D. is more affected by corrosive atmosphere. Discuss
- 2. The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.
Options- A. 0.6-0.8 times
- B. equal to
- C. twice
- D. 2 ft irrespective of (for column > 3 ft diameter) Discuss
- 3. 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
- 4. Except __________ , all other refractories are bad conductors of electricity (i.e, have low electrical conductivity).
Options- A. fireclay
- B. carborundum
- C. graphite
- D. chromite Discuss
- 5. Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about __________ of that of water (i.e. 1 gm/c.c).
Options- A. one fourth
- B. one third
- C. half
- D. one eighth Discuss
- 6. Base suspension fertiliser essentially contains
Options- A. 13% N2 and 43% P2O5
- B. 43% N2 and 13% P2O5
- C. 43% N2 and 13% K2O
- D. 43% K2O and 43% P2O5 Discuss
- 7. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the
Options- A. low pressure and high temperature.
- B. low pressure and low temperature.
- C. high pressure and low temperature.
- D. high pressure and high temperature. Discuss
- 8. Contact lenses for eyes are made of perspex, which is nothing but
Options- A. polymethylmethacrylate
- B. polystyrene
- C. unsaturated polyester
- D. polypropylene Discuss
- 9. The inventory of raw materials included in the working capital is usually about __________ months supply of raw materials valued at delivery prices.
Options- A. one
- B. three
- C. six
- D. twelve Discuss
- 10. The value of fouling factor depends upon the
Options- A. characteristic of process fluid.
- B. velocity of process fluid containing suspended solids.
- C. suspended solids in the fluid.
- D. all (a), (b) and (c). Discuss
More questions
Correct Answer: can measure higher temperature.
Correct Answer: 0.6-0.8 times
Correct Answer: Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available.
Correct Answer: graphite
Correct Answer: half
Correct Answer: 13% N2 and 43% P2O5
Correct Answer: low pressure and low temperature.
Correct Answer: polymethylmethacrylate
Correct Answer: one
Correct Answer: all (a), (b) and (c).
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