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- Question
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
Options- A. poor visibility due to sky darkening.
- B. irritation in eyes.
- C. respiratory trouble.
- D. all (a), (b) and (c).
- Correct Answer
- all (a), (b) and (c).
- 1. Unit of mass velocity is
Options- A. kg/m . hr
- B. kg/m2.hr
- C. kg/hr
- D. kg/m2 Discuss
- 2. As per Kirchoff s equation, the heat of reaction is affected by the
Options- A. pressure
- B. volume
- C. temperature
- D. molecularity Discuss
- 3. Which of the following is not a component of the fixed capital for a chemical plant facility?
Options- A. Raw materials inventory.
- B. Utilities plants.
- C. Process equipment.
- D. Emergency facilities. Discuss
- 4. Dust laden air can be purified using a
Options- A. cyclone separator
- B. bag filter
- C. gravity settler
- D. tubular centrifuge Discuss
- 5. Nylon-66 compared to nylon-6 has
Options- A. lower melting point.
- B. more abrasion resistant properties.
- C. higher hardness.
- D. all (a), (b) and (c). Discuss
- 6. The transfer function for a PID controller is (where, ? i is the integral (reset) time and ?D is the derivative time.)
Options- A. Kc(1 + ?is + ?D ). s
- B.
- C.
- D.
Discuss
- 7. Shock resisting steels should possess high
Options- A. hardness
- B. toughness
- C. tensile strength
- D. wear resistance Discuss
- 8. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.
Options- A. 3 to 4
- B. 8 to 10
- C. 10 to 15
- D. 15 to 20 Discuss
- 9. If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.
Options- A. increase by 1.8
- B. decrease by 22
- C. increase by 21.6
- D. none of these Discuss
- 10. For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become
Options- A. P/3
- B. 3P
- C. 9P2
- D. 9P Discuss
More questions
Correct Answer: kg/m2.hr
Correct Answer: temperature
Correct Answer: Raw materials inventory.
Correct Answer: cyclone separator
Correct Answer: higher hardness.
Correct Answer:
Correct Answer: toughness
Correct Answer: 3 to 4
Correct Answer: increase by 21.6
Correct Answer: P/3
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