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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


  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


  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


  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


  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


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

  12. A.

     Impact

    B.

     Completely reversed

    C.

     Dynamic

    D.

     Static & dynamic


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

  14. A.

     Impact

    B.

     Completely reversed

    C.

     Dynamic

    D.

     Static & dynamic


  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


  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


  19. Hot working of lead is carried out at

  20. A.

     75°C

    B.

     373°K

    C.

     150°C

    D.

     Room temperature