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Chemical Engineering :: Chemical Engineering Basics-2

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

  2. A.

     Visco-elastic

    B.

     Isotropic

    C.

     Elastic

    D.

     Plastic


  3. __________ of austenite decreases the hardenability in steel.

  4. A.

     Fine grains

    B.

     Coarse grains

    C.

     Homogeneity

    D.

     Dissolved elements (except cobalt)


  5. The starting of a car takes time in winter, because the

  6. A.

     Octane number of fuel is decreased

    B.

     Fuel supply for ignition is not sufficient

    C.

     Vaporisation of the fuel is decreased

    D.

     Pour point of fuel decreases


  7. The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/ cm².

  8. A.

     273.15

    B.

     225.65

    C.

     100.03

    D.

     373.15


  9. As the fluid flow rate increases, the float of the rotameter

  10. A.

     Rises in the tube

    B.

     Rotates at higher speed

    C.

     Rotates at lower speed

    D.

     Drops down in the tube


  11. The most abundant metal present in the earth's crust is;

  12. A.

     Iron

    B.

     Copper

    C.

     Titanium

    D.

     Aluminium


  13. The rolling process can not be used to produce

  14. A.

     Plates

    B.

     Rods

    C.

     Tubes

    D.

     Wires


  15. Multistage compression of air as compared to single stage compression offers the advantage of

  16. A.

     Power saving per unit weight of air delivered

    B.

     Moisture elimination in the inter-stage cooler

    C.

     Increased volumetric efficiency

    D.

     All of the above


  17. Water hammer in pipelines results, when the flowing fluid

  18. A.

     Has very high velocity

    B.

     Has very high pressure

    C.

     Is brought to rest by gradually closing a valve

    D.

     Is suddenly brought to rest by closing a valve


  19. Which of the following is capable of acting both as an acid flux as well as a basic flux in the metal extraction from its ore?

  20. A.

     Silica

    B.

     Lime

    C.

     Alumina

    D.

     Fluorite