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Chemical Engineering :: Chemical Engineering Basics

  1. With increase in carbon percentage in steel, its

  2. A.
    yield stress decreases.
    B.
    elongation percent increases.
    C.
    tensile strength increases.
    D.
    impact strength increases.

  3. Percentage of gaunge is maximum in the ore of

  4. A.
    iron
    B.
    gold
    C.
    zinc
    D.
    copper

  5. The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?

  6. A.
    Cassiterite
    B.
    Sphalerite
    C.
    Chalcopyrite
    D.
    Calcite

  7. Pick out the wrong statement.

  8. A.
    Dry bulb temperature, wet bulb temperature & dew point are the same in case of saturated air.
    B.
    Dew point is reached by cooling the humid air at constant moisture content.
    C.
    Heating of humid air is done for its dehumidification.
    D.
    none of these.

  9. The most commonly used material for sewers for carrying sewage in the normal situation is

  10. A.
    asbestos cement
    B.
    stainiess steel
    C.
    stoneware
    D.
    cast iron

  11. Filler metal is used in __________ welding.

  12. A.
    braze
    B.
    electric spot
    C.
    projection
    D.
    seam

  13. Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.

  14. A.
    stainless steel
    B.
    copper
    C.
    aluminium
    D.
    brass

  15. Which of the following contains the least percentage of carbon ?

  16. A.
    Pig iron
    B.
    Wrought iron
    C.
    Cast iron
    D.
    Malleable iron

  17. Electric arc furnace is employed mainly for the production of __________ steel.

  18. A.
    high carbon
    B.
    alloy
    C.
    mild
    D.
    plain carbon

  19. Heat treatment of steel is done mainly to change its

  20. A.
    mechanical properties.
    B.
    physical properties,
    C.
    chemical composition.
    D.
    all 'a', 'b' & 'c'.