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Chemical Engineering :: Chemical Engineering Basics-2

  1. As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.

  2. A.

     110

    B.

     85

    C.

     60

    D.

     45


  3. The following type of bonding is strongly directional in solids.

  4. A.

     Vander Waal's

    B.

     Ionic

    C.

     Metallic

    D.

     Covalant


  5. The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the

  6. A.

     Critical point

    B.

     Curie temperature

    C.

     Inversion temperature

    D.

     Eutectic temperature


  7. Non-ferrous alloys used for making cutting tools need not have high

  8. A.

     Abrasion resistance

    B.

     Toughness

    C.

     Red hardness

    D.

     Cutting speed


  9. The gases used in the treatment of asthma is a mixture of __________ and oxygen.

  10. A.

     Helium

    B.

     Argon

    C.

     Neon

    D.

     None of these


  11. Magnetic permeability of iron is increased by its

  12. A.

     Decarburising

    B.

     Alloying with cobalt

    C.

     Purification

    D.

     Alternate heating & cooling


  13. The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is

  14. A.

     0.5

    B.

     1

    C.

     1.5

    D.

     2


  15. FeO (s) + CO (g) = Fe (s) + CO₂ (g), k = 0. 435 at 1173E; At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K?

  16. A.

     1.0

    B.

     1.3

    C.

     2.3

    D.

     3.3


  17. Material of construction of foundary crucible is

  18. A.

     Graphite

    B.

     Lead

    C.

     Porcelain

    D.

     Stainless steel


  19. Material of construction of foundary crucible is

  20. A.

     Lead

    B.

     Stainless steel

    C.

     Graphite

    D.

     Cast iron