Home / Chemical Engineering / Chemical Engineering Basics :: Section 25

Chemical Engineering :: Chemical Engineering Basics

  1. Addition of __________ to steel does not help in improving its machinability.

  2. A.
    sulphur
    B.
    silicon
    C.
    lead
    D.
    phosphorous

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Chalcopyrite is an ore of

  4. A.
    lead
    B.
    aluminium
    C.
    copper
    D.
    zinc

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks.

  6. A.
    Iron
    B.
    Copper
    C.
    Nickel
    D.
    Magnesium

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

  8. A.
    radiation
    B.
    conduction
    C.
    convection
    D.
    both (b) & (c)

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Increasing the carbon content of steel

  10. A.
    reduces the upper shelf energy.
    B.
    increasing the ductility transition temperature.
    C.
    decreases brittleness.
    D.
    decreases hardness.

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. __________ metal is used as a bearing liner material.

  12. A.
    Pewter
    B.
    White
    C.
    Babbit
    D.
    Gun

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.

  14. A.
    parting
    B.
    synthetic
    C.
    loam
    D.
    dry

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Brazing filler metal used for joining steel plates

  16. A.
    melts below the melting points of base metals.
    B.
    melts below 300°C.
    C.
    is copper phosphorous alloy.
    D.
    is copper.

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Fine grain size in metallic material will

  18. A.
    increase the yield strength.
    B.
    increase the creep strength.
    C.
    increase the fatigue strength.
    D.
    decrease the impact strength.

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Electrometallurgical methods of metal extraction is normally used for those metals

  20. A.
    whose oxide/ore is not reduced by carbon.
    B.
    which fall in the category of alkali & alkaline earth metals.
    C.
    which stands higher in the electrochemical series of the metal.
    D.
    all (a), (b) & (c).

    View Answer

    Workspace

    Discuss Discuss in Forum