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Chemical Engineering :: Chemical Engineering Basics-2

  1. The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be

  2. A.

     3171Pa

    B.

     3567Pa

    C.

     1.01 x 10⁵Pa

    D.

     5000Pa

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  3. With increase in temperature, the electrical conductivity of a __________ decreases.

  4. A.

     Semi-conductor

    B.

     Metal or alloy

    C.

     Dielectric

    D.

     None of these

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  5. The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

  6. A.

     Wet bulb temperature=dry bulb temperature

    B.

     Wet bulb temperature=dew point temperature

    C.

     Saturation temperature=dew point temperature

    D.

     All of the above

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  7. In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of

  8. A.

     Chromium, tungsten & vanadium

    B.

     Tungsten, chromium & vanadium

    C.

     Tungsten, vanadium & chromium

    D.

     Tungsten, chromium & molybdenum

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  9. Property of a material to resist a tensile force without giving away is a measure of its

  10. A.

     Stiffness

    B.

     Toughness

    C.

     Resilience

    D.

     Tenacity

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  11. A material being tested for endurance strength is subjected to the __________ load.

  12. A.

     Impact

    B.

     Completely reversed

    C.

     Dynamic

    D.

     Static & dynamic

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  13. A material being tested for endurance strength is subjected to the __________ load.

  14. A.

     Impact

    B.

     Completely reversed

    C.

     Dynamic

    D.

     Static & dynamic

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  15. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.

  16. A.

     Butt

    B.

     Lap

    C.

     Welded

    D.

     None of these

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  17. Killed steels

  18. 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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  19. Hot working of lead is carried out at

  20. A.

     75°C

    B.

     373°K

    C.

     150°C

    D.

     Room temperature

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