Home / Chemical Engineering / Chemical Engineering Basics :: Section 20

Chemical Engineering :: Chemical Engineering Basics

  1. Batch process is preferred over continuous process, when the

  2. A.
    product yields and quality can not be achieved in continuous process, because of long residence time.
    B.
    sales demand of product is not steady.
    C.
    same equipment can not be used for several processes of the same nature.
    D.
    all (a), (b) & (c)

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Which of the following is a permanent fastening?

  4. A.
    Rivets
    B.
    Bolts
    C.
    Screws
    D.
    Keys

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Hot & cold working of material causes its __________ deformation.

  6. A.
    visco-elastic
    B.
    isotropic
    C.
    elastic
    D.
    plastic

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

  8. A.
    T
    B.
    1/T
    C.
    T2
    D.
    1/T2

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. In a fuel cell, chemical energy is converted into

  10. A.
    electrical energy directly.
    B.
    mechanical energy.
    C.
    electrical energy and stored therein.
    D.
    none of these.

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Which of the following is not a cupro-nick-el alloy ?

  12. A.
    German silver
    B.
    Monel metal
    C.
    Muntz metal
    D.
    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Electrochemical corrosion occurs

  14. A.
    where the liquid electrolytes containing free ions are present.
    B.
    only in alloys.
    C.
    only in pure metals.
    D.
    due to direct chemical action of metal with oxygen.

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.

  16. A.
    red
    B.
    extended
    C.
    super
    D.
    extreme

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Improvement in mechanical properties of metals in its hot working is due to the grains

  18. A.
    recrystallisation
    B.
    refinement
    C.
    growth
    D.
    recovery

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby

  20. A.
    alloying additions
    B.
    heat treatment
    C.
    cold work
    D.
    increasing temperature

    View Answer

    Workspace

    Discuss Discuss in Forum