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Chemical Engineering :: Chemical Engineering Basics

  1. A solution which resists change in its pH value on addition of acid/alkali is called the __________ solution.

  2. A.
    neutral
    B.
    ideal
    C.
    buffer
    D.
    zero pH

  3. Pick out the wrong statement.

  4. A.
    Weldability of high carbon steel is poorer compared to low carbon steel.
    B.
    Invar is a magnetic alloy.
    C.
    Magnetic permeability of the diamagenetic material is less than one.
    D.
    Martensitic transformation never goes to complection ( i.e., 100%) at room temperature.

  5. The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

  6. A.
    tension
    B.
    shear
    C.
    compression
    D.
    bending & tension

  7. Which of the following is not categorised as the ore agglomeration process ?

  8. A.
    Nodulising
    B.
    Pelletising
    C.
    Balling
    D.
    Briquetting

  9. With increase in temperature, the surface tension of water

  10. A.
    increases
    B.
    decreases
    C.
    remains constant
    D.
    increases linearly

  11. A reduction in thermal resistance during heat transfer does not occur in the

  12. A.
    convection heat transfer by stirring the fluid and cleaning the heating surface.
    B.
    conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity.
    C.
    radiation heat transfer by increasing the temperature and reducing the emis-sivity.
    D.
    none of these.

  13. Unit of viscosity in CGS system is

  14. A.
    gm .cm-1 sec-1
    B.
    gm . cm2 . sec-2
    C.
    gm .cm-2, sec-1
    D.
    gm . cm . sec-1

  15. Shaft/rotor speed is most accurately measured by a

  16. A.
    frequency counter.
    B.
    tachometer.
    C.
    strobometer.
    D.
    speedometer.

  17. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

  18. A.
    Tensile
    B.
    Fatigue
    C.
    Impact
    D.
    None of these

  19. The rolling process can not be used to produce

  20. A.
    plates
    B.
    rods
    C.
    tubes
    D.
    wires