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Chemical Engineering :: Chemical Engineering Basics

  1. Recrystallisation temperature of steel is __________ °C.

  2. A.
    50
    B.
    300
    C.
    500
    D.
    800

  3. Pressure required to increase the density of water by about 1% is __________ atmosphere.

  4. A.
    10
    B.
    50
    C.
    200
    D.
    1000

  5. Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion.

  6. A.
    annealing
    B.
    toughening
    C.
    work hardening
    D.
    tempering

  7. The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the

  8. A.
    fatigue strength
    B.
    creep strength
    C.
    resilience
    D.
    endurance limit

  9. The best guide to judge the general quality of water is the measurement of its

  10. A.
    pH value.
    B.
    electrical conductivity.
    C.
    turbidity.
    D.
    dissolved oxygen content.

  11. Wrought iron is not

  12. A.
    ductile & resistant to corrosion/rusting.
    B.
    weldable easily.
    C.
    having uniform strength in all directions.
    D.
    having maximum tensile strength along the lines of slag distribution.

  13. Which of the following is the largest quantum of pressure?

  14. A.
    1 kg/cm2
    B.
    1 bar
    C.
    1 atmosphere
    D.
    1 kilo Pascal

  15. Which of the following is not a charge material for cupola ?

  16. A.
    Limestone
    B.
    Iron scrap
    C.
    Iron ore
    D.
    Pig iron

  17. Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore ?

  18. A.
    High fusibility & fluidity.
    B.
    High thermal conductivity.
    C.
    Low density.
    D.
    High chemical activity.

  19. In __________ process, ions of salts react with water to produce acidity or alkalinity.

  20. A.
    hydration
    B.
    hydrolysis
    C.
    electrolysis
    D.
    dialysis