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- Question
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as
Options- A. K ? D
- B. K ?D
- C. K ? D1.5
- D. K ? D2
- Correct Answer
- K ? D
- 1. Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about __________ mm.
Options- A. 10
- B. 50
- C. 100
- D. 150 Discuss
- 2. 'Solvent naphtha' used mostly as a solvent in paints and perfumery is produced by the __________ of virgin naphtha into small boiling range cuts.
Options- A. steam reforming
- B. distillation
- C. desulphurisation
- D. none of these Discuss
- 3. Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their
Options- A. particle sizes
- B. densities
- C. terminal velocities
- D. none of these Discuss
- 4. Mixing of plastic solids is generally facilitated by
Options- A. dispersion
- B. mastication
- C. kneading
- D. none of these Discuss
- 5. Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its
Options- A. molecular weight
- B. aromatics content
- C. both a & b
- D. neither a nor b Discuss
- 6. Pressure of CO2 gas (which is a coolant) in the Calder-Hall nuclear reactor is __________ kgf/cm2 .
Options- A. 0.2
- B. 7
- C. 35
- D. 50 Discuss
- 7. Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
Options- A. 2 to 3
- B. 0.01 to 0.10
- C. 200 to 300
- D. 100 to 1000 Discuss
- 8. Candu reactor is a __________ nuclcear reactor.
Options- A. natural uranium fuelled heavy water cooled & moderated
- B. highly enriched uranium (85% U-235) fuelled
- C. homogeneous
- D. fast breeder Discuss
- 9. Purchased cost of equipments for a chemical process plant ranges from __________ percent of the fixed capital investment.
Options- A. 10 to 20
- B. 20 to 40
- C. 45 to 60
- D. 65 to 75 Discuss
- 10. "Critical mass" is the minimum mass of nuclear fissile material required for the
Options- A. sustainment of chain reaction.
- B. power generation on commercial scale.
- C. economic power generation.
- D. none of these. Discuss
More questions
Correct Answer: 100
Correct Answer: distillation
Correct Answer: terminal velocities
Correct Answer: kneading
Correct Answer: both a & b
Correct Answer: 7
Correct Answer: 2 to 3
Correct Answer: natural uranium fuelled heavy water cooled & moderated
Correct Answer: 20 to 40
Correct Answer: sustainment of chain reaction.
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