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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

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  3. Blast furnace is a

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

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  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

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  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.

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  9. X-rays do not exhibit the property of

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

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  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.

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

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

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  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.

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  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.

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  19. The unit of gc is

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