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Chemical Engineering :: Chemical Engineering Basics

  1. Device used as a standard for the calibration of pressure gauges is a

  2. A.
    bellow
    B.
    diaphragm
    C.
    dead weight pressure tester
    D.
    mercury manometer

  3. X-rays are

  4. A.
    positively charged.
    B.
    negatively charged.
    C.
    neutral.
    D.
    of higher wavelength than visible light.

  5. Diffusion co-efficient of a metal in a solid solution depends upon its

  6. A.
    composition
    B.
    temperature
    C.
    both (a) & (b)
    D.
    neither (a) nor (b)

  7. Cast iron contains __________ percent carbon.

  8. A.
    2.5
    B.
    3.75
    C.
    4.75
    D.
    5.25

  9. Alloys having more than 80% copper are generally more

  10. A.
    abrasion resistant.
    B.
    corrosion resistant.
    C.
    prone to season cracking.
    D.
    machinable.

  11. Direct conversion of thermal energy to electrical energy is facilitated by the

  12. A.
    fuel cells.
    B.
    photo voltaic cell.
    C.
    magneto hydrodynamic generator.
    D.
    none of these.

  13. The minimum carbon content in steel should be __________ percent for it to respond to a hardening treatment.

  14. A.
    0.2
    B.
    0.4
    C.
    0.6
    D.
    0.8

  15. Angular displacement can be measured suitably by a

  16. A.
    shaft encoder.
    B.
    linear variable differential transducer (LVDT).
    C.
    stroboscope.
    D.
    tachometer.

  17. Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.

  18. A.
    wet bulb
    B.
    dry bulb
    C.
    saturation
    D.
    dew point

  19. Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by

  20. A.
    conduction
    B.
    convection
    C.
    both 'a' & 'b'
    D.
    radiation