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Chemical Engineering :: Chemical Engineering Basics

  1. A colloidal system, in which a liquid is dispersed in gas is called a/an

  2. A.
    gel
    B.
    aerosol
    C.
    foam
    D.
    emulsion

  3. Blast furnace is a

  4. A.
    counter current reactor
    B.
    co-current reactor
    C.
    cross-current reactor
    D.
    combination of all the three

  5. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an

  6. A.
    pitot tube
    B.
    hot wire anemometer
    C.
    rotameter
    D.
    stroboscope

  7. The primary strengthening mechanism in 70 : 30 brass is the

  8. A.
    solid solution strengthening.
    B.
    precipitation hardening.
    C.
    dispersion strengthening.
    D.
    order hardening.

  9. X-rays do not exhibit the property of

  10. A.
    reflection
    B.
    scattering
    C.
    diffraction
    D.
    dispersion

  11. Killed steels

  12. A.
    are free from oxygen.
    B.
    contain not even traces of sulphur & phosphorous.
    C.
    are produced by L.D. process only.
    D.
    contain minimum impurity level.

  13. Which of the following phenomenon/ phenomena is/are diffusion controlled ?

  14. A.
    Dislocation climb
    B.
    Cross-slip
    C.
    Twinning
    D.
    Recrystallisation

  15. Joule-Thomson co-efficient is the ratio of

  16. A.
    pressure change to temperature change occuring during adiabatic compression of a gas.
    B.
    pressure change to temperature change occuring during adiabatic throttling of a gas.
    C.
    temperature change to pressure change occuring during adiabatic compression of a gas.
    D.
    temperature change to pressure change occuring during adiabatic throttling of a gas.

  17. Expansion device used in a window air-conditioner is a/an

  18. A.
    automatic expansion valve.
    B.
    thermostatic expansion valve.
    C.
    float valve.
    D.
    capillary tube.

  19. The unit of gc is