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- Question
Linear polymers are normally
Options- A. thermosetting.
- B. thermosplastic.
- C. elastometric.
- D. having extremely high softening point.
- Correct Answer
- thermosplastic.
- 1. 1.2 to 3.8 cms is the value of the
Options- A. downcomer liquid seal in case of a balanced tray design.
- B. static submergence in case of a bubble cap tray for column operating under pressure (? 1 atm.).
- C. skirt clearance for bubble caps.
- D. all (a), (b) and (c). Discuss
- 2. Thorium metal
Options- A. resembles steel in appearance.
- B. is less hard (in the range of silver).
- C. is highly ductile.
- D. all (a), (b) and (c). Discuss
- 3. Pick out the first order system from among the following.
Options- A. Damped vibrator.
- B. Mercury in glass thermometer kept in boiling water.
- C. Interacting system of two tanks in series.
- D. Non-interacting system of two tanks in series. Discuss
- 4. Vinyl flooring is done using __________ sheets.
Options- A. polypropylene
- B. PVC
- C. polythene
- D. polyvinyl acetate Discuss
- 5. Regenerators compared to the recuperators for the same duty
Options- A. occupy more space
- B. are less costly
- C. are of smaller size
- D. all (a), (b) and (c) Discuss
- 6. A screen is said to be blinded, when the
Options- A. oversizes are present in undersize fraction.
- B. undersizes are retained in oversize fraction.
- C. screen is plugged with solid particles.
- D. screen capacity is abruptly increased. Discuss
- 7. Heavy duty bearings are usually made of
Options- A. white metal
- B. phosphorous bronze
- C. monel
- D. zinc Discuss
- 8. The permissible color for domestic water supply is __________ ppm.
Options- A. 1
- B. 20
- C. 100
- D. 1000 Discuss
- 9. The most common filter aid is
Options- A. diatomaceous earth
- B. calcium silicate
- C. sodium carbonate
- D. silica gel Discuss
- 10. Oxidation of ammonia is
Options- A. exothermic
- B. endothermic
- C. non-catalytic
- D. autocatalytic Discuss
More questions
Correct Answer: all (a), (b) and (c).
Correct Answer: all (a), (b) and (c).
Correct Answer: Mercury in glass thermometer kept in boiling water.
Correct Answer: PVC
Correct Answer: occupy more space
Correct Answer: screen is plugged with solid particles.
Correct Answer: white metal
Correct Answer: 20
Correct Answer: diatomaceous earth
Correct Answer: exothermic
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