Discussion
Home ‣ Chemical Engineering ‣ Refractory Technology See What Others Are Saying!
- Question
Roof of a basic electric furnace is made of __________ bricks.
Options- A. superduty fireclay
- B. silica
- C. chromite
- D. none of these
- Correct Answer
- silica
- 1. Maximum consumption of polymers is in
Options- A. electrical insulation
- B. toys making
- C. coating and films
- D. packaging Discuss
- 2. To resist spalling tendency, a refractory should have
Options- A. greater diffusivity.
- B. low specific heat.
- C. low thermal co-efficient of expansion.
- D. all (a), (b) and (c). Discuss
- 3. Thermosetting materials
Options- A. are cross-linked molecules.
- B. soften on application of heat.
- C. are solvent soluble.
- D. none of these. Discuss
- 4. Laboratory gas is obtained by the cracking of
Options- A. gasoline
- B. diesel
- C. fuel oil
- D. kerosene Discuss
- 5. Percentage of drum submerged in the slurry in case of rotary drum filter is
Options- A. 3
- B. 30
- C. 85
- D. 25 Discuss
- 6. Which of the following variables does not affect the furnace capacity?
Options- A. Size of the furnace.
- B. Gas velocity in furnace.
- C. Ratio of wall surface to surface of stock.
- D. None of these. Discuss
- 7. Main constituent of natural gas is
Options- A. CH4
- B. C2H2
- C. C2H4
- D. C2H6 Discuss
- 8. Fusion point of a basic refractory material is
Options- A. reduced by the addition of acid oxides.
- B. increased by the addition of acid oxides.
- C. not affected by the addition of acid oxides.
- D. always less than 1000°C. Discuss
- 9. 80% less than 200 mesh size particles are called
Options- A. smoke
- B. powder
- C. grit
- D. aggregates Discuss
- 10. The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.
Options- A. 6
- B. 18
- C. 24
- D. 34 Discuss
More questions
Correct Answer: coating and films
Correct Answer: all (a), (b) and (c).
Correct Answer: are cross-linked molecules.
Correct Answer: kerosene
Correct Answer: 30
Correct Answer: None of these.
Correct Answer: CH4
Correct Answer: reduced by the addition of acid oxides.
Correct Answer: powder
Correct Answer: 6
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