Discussion
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- Question
Overfire burning in a furnace is a phenomenon characterised by
Options- A. supply of excess fuel.
- B. supply of excess air.
- C. burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air.
- D. none of these.
- Correct Answer
- burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air.
- 1. In the design of a paddle agitator, the ratio
is normally taken as
Options- A. 0.1
- B. 0.8
- C. 0.25
- D. 0.5 Discuss
- 2. Which of the following is the most harmful for the human being?
Options- A. ?-rays
- B. X-rays
- C. ?-rays
- D. ultra violet rays Discuss
- 3. Nylon-66 is a polyamide of
Options- A. hexamethylene diamine and adipic acid.
- B. adipic acid and methyl amine.
- C. vinyl chloride and formaldeyde.
- D. none of these. Discuss
- 4. The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.
Options- A. 6
- B. 12
- C. 18
- D. 34 Discuss
- 5. In Bode plot, ? vs ? is plotted on a/an __________ graph paper.
Options- A. log-log
- B. ordinary
- C. semi-log
- D. triangular Discuss
- 6. Which of the following is not an intensive property?
Options- A. Chemical potential
- B. Surface tension
- C. Heat capacity
- D. None of these Discuss
- 7. Catalyst used in steam reforming of naphtha is
Options- A. bauxite
- B. cobalt
- C. nickel oxide on alumina support
- D. chromium Discuss
- 8. Use of pulverised coal in boilers provides
Options- A. higher calorific value
- B. better combustion
- C. smokeless burning
- D. less erosion on furnace wall. Discuss
- 9. Mixing of light fine powder such as insecticides is done by
Options- A. banbery mixer
- B. pug mill
- C. impact wheels
- D. kneader Discuss
- 10. Annealing ofwhite cast iron produces __________ iron.
Options- A. grey
- B. nodular
- C. malleable
- D. spheroidal Discuss
More questions
Correct Answer: 0.8
Correct Answer: ?-rays
Correct Answer: hexamethylene diamine and adipic acid.
Correct Answer: 18
Correct Answer: log-log
Correct Answer: Heat capacity
Correct Answer: nickel oxide on alumina support
Correct Answer: better combustion
Correct Answer: impact wheels
Correct Answer: malleable
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