logo

CuriousTab

CuriousTab

Discussion

Home ‣ Chemical Engineering ‣ Mechanical Operations See What Others Are Saying!
  • Question

  • A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is


  • Options
  • A. 0.50
  • B. 0.58
  • C. 0.68
  • D. 0.62

  • Correct Answer
  • 0.50 

    • More questions

    • 1. Cellulose content in bomboo fibre is about __________ percent.

    • Options
    • A. 10
    • B. 20
    • C. 50
    • D. 85
      • Discuss
    • 2. Gold ore concentration is mostly done using

    • Options
    • A. jigging
    • B. tabling
    • C. froth floatation
    • D. elutriation
      • Discuss
    • 3. Vapor pressure of water at 100°C is about __________ bar.

    • Options
    • A. 0.1013
    • B. 1.013
    • C. 10.13
    • D. 101.3
      • Discuss
    • 4. P2O5 content in triple superphosphate is about __________ percent.

    • Options
    • A. 42-50
    • B. 15-20
    • C. 85-90
    • D. 70-75
      • Discuss
    • 5. For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell

    • Options
    • A. decreases upwards.
    • B. increases upwards.
    • C. remains same throughout.
    • D. may decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell.
      • Discuss
    • 6. Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop.

    • Options
    • A. Tank 1
    • B. Tank 2
    • C. Tank 3
    • D. Tank 4
      • Discuss
    • 7. The gas which contributes maximum to the heating value of natural gas is

    • Options
    • A. CO
    • B. CO2
    • C. H2
    • D. CH4
      • Discuss
    • 8. Pick out the wrong unit conversion.

    • Options
    • A. l kgf= 9.8 Newton.
    • B. 1 stoke = 1 m2/second.
    • C. 1 Pascal second = 10 poise.
    • D. 1 ppm = 1 ml/m3 = 1 mg/kg.
      • Discuss
    • 9. Styrene butadiene rubber is commercially manufactured by

    • Options
    • A. bulk polymerisation
    • B. suspension polymerisation
    • C. solution polymerisation
    • D. emulsion polymerisation
      • Discuss
    • 10. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).

    • Options
    • A. 15
    • B. 45
    • C. 65
    • D. 85
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.