Home / Chemical Engineering / Chemical Engineering Basics-2 :: Section-1

Chemical Engineering :: Chemical Engineering Basics-2

  1. Which of the following has the highest modulus of elasticity (about 7 x 10⁶ kg/cm²) ?

  2. A.

     High speed steel

    B.

     Stainless steel

    C.

     Tungsten carbide

    D.

     Superalloys

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Pick out the correct statement.

  4. A.

     Materials exhibiting high elasticity obey Hooke's law

    B.

     The elastic behaviour of rubber under compression is the same as its behaviour under tension

    C.

     The damping capacity of a material is due to its plastic deformation

    D.

     The stress required to cause plastic flow in polycrystalline material is higher as compared to monocrystalline materials due to the presence of grains of different orientations

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Pick out the correct statement.

  6. A.

     Hot worked materials are subjected to annealing to remove internal stresses

    B.

     Annealing of steel hardens it slightly

    C.

     Normalising of a material induces stresses

    D.

     Tempering of a material improves ductility & toughness but reducess hardness & brittlenes

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. Pick out the correct statement.

  8. A.

     A base is always soluble in water

    B.

     Hydrogen is released whenever a metal reacts with an acid

    C.

     Sodium hydroxide is both a base and an alkali

    D.

     All of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of

  10. A.

     Steel

    B.

     Glass wood

    C.

     Copper

    D.

     Fireclay bricks

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Addition of silicon to aluminium improves its

  12. A.

     Corrosion resistance

    B.

     Machinability

    C.

     Castability

    D.

     None of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. In continuous casting of liquid steel, the mould is made of

  14. A.

     Water cooled steel

    B.

     Water cooled copper

    C.

     Refractory oxide

    D.

     Silicon carbide

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. The surface tension of a liquid, at critical temperature is

  16. A.

     Indeterminate

    B.

     Zero

    C.

     Infinity

    D.

     Same as that at any other temperature

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. Identify the false statement

  18. A.

     Martensitic steels are less susceptible to pitting corrosion than austenitic steels

    B.

     Pitting corrosion is usually very localised

    C.

     Hydrogen embrittlement is facilitated by tensile stress

    D.

     Stress corrosion cracking is facilitated by tensile stress

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Fatigue life is expected to increase by

  20. A.

     Increasing the size of the sample

    B.

     Smooth polishing of the surface of the sample

    C.

     Having compressive residual stresses at the surface

    D.

     Having tensile residual stresses at the surface

    View Answer

    Workspace

    Discuss Discuss in Forum