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Chemical Engineering :: Chemical Engineering Basics-2

  1. In chemical dehumidification of air

  2. A.

     Both specific humidity & dry bulb temperature increases

    B.

     Both specific humidity & dry bulb temperature decreases

    C.

     Specific humidity decreases & dry bulb temperature increases

    D.

     Specific humidity increases & dry bulb temperature decreases


  3. Liquid nitrogen containers can be made from

  4. A.

     Ferritic stainless steel

    B.

     HSLA steel

    C.

     Titanium

    D.

     Austenitic stainless steel


  5. According to thermodynamic Farenhite scale, the fundamental interval between ice point to steam point is

  6. A.

     180°

    B.

     212°

    C.

     32°

    D.

     273°


  7. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

  8. A.

     5

    B.

     1.25

    C.

     2.5

    D.

     3.75


  9. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity

  10. A.

     Is trebled

    B.

     Remains unchanged

    C.

     Decreases by a factor of √3

    D.

     Decreases by a factor of 1/3


  11. Saturated steam at a pressure of 25 kg/cm² is throttled to attain 5 kg/cm² . Then the outcoming steam will be

  12. A.

     Wet

    B.

     Saturated

    C.

     Superheated

    D.

     None of these


  13. The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

  14. A.

     Silicon

    B.

     Carbon

    C.

     Phosphorous

    D.

     Chromium


  15. Addition of __________ to steel can not impart it high strength at elevated temperature.

  16. A.

     Nickel

    B.

     Magnesium

    C.

     Silicon

    D.

     Manganese


  17. Lead percentage in pure galena is about

  18. A.

     8.6

    B.

     86.6

    C.

     35.8

    D.

     61.4


  19. When a copper ball is heated, the largest percentage increase will be in its

  20. A.

     Radius

    B.

     Area

    C.

     Mass

    D.

     Volume