Discussion
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- Question
Maximum plate efficiency is achieved in case of __________ flow.
Options- A. split
- B. cross
- C. cascade
- D. reverse
- Correct Answer
- cross
- 1. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of
Options- A. mixing
- B. adsorption
- C. wetting
- D. complete wetting Discuss
- 2. Lug support is meant for supporting __________ vessels.
Options- A. large horizontal cylindrical
- B. tall but empty
- C. small
- D. thick walled tall Discuss
- 3. Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid
Options- A. containing suspended solids flows at low velocity.
- B. containing suspended solids flows at high velocity.
- C. is highly viscous.
- D. is of high specific gravity. Discuss
- 4. Which of the following does not come under the sales expenses for a product of a chemical plant?
Options- A. Advertising
- B. Warehousing
- C. Legal fees
- D. Customer service. Discuss
- 5. __________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).
Options- A. Hemispherical
- B. Dished
- C. Ellipsoidal
- D. Conical Discuss
- 6. In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for
Options- A. reducing scale deposition.
- B. increasing pressure drop.
- C. fixing the tubes.
- D. creating turbulence. Discuss
- 7. Circulation of gases in furnace is caused by the
Options- A. change in volume during a change of temperature.
- B. difference in density between hot and cold gases.
- C. furnace pressure in conjunction with draft in flues.
- D. all (a), (b) and (c). Discuss
- 8. Pick out the wrong statement.
Options- A. Higher specific gravity of petroleum products means higher C/H ratio.
- B. Aromatics have lower specific gravity than corresponding paraffins.
- C. Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.
- D. Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight. Discuss
- 9. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.
Options- A. sidefired
- B. underfired
- C. covered
- D. recirculating Discuss
- 10. The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)
Options- A. 0.5 d
- B. 0.75 d
- C. d
- D. 2 d Discuss
More questions
Correct Answer: complete wetting
Correct Answer: small
Correct Answer: containing suspended solids flows at low velocity.
Correct Answer: Legal fees
Correct Answer: Ellipsoidal
Correct Answer: creating turbulence.
Correct Answer: all (a), (b) and (c).
Correct Answer: Aromatics have lower specific gravity than corresponding paraffins.
Correct Answer: underfired
Correct Answer: d
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