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  1. At 100% relative humidity, the dew point temperature of moist air is

  2. A.
    less than the wet bulb temperature.
    B.
    more than the wet bulb temperature.
    C.
    equal to the wet bulb temperature.
    D.
    equal to the ambient temperature.

  3. Which one is neutral in character ?

  4. A.
    N2O4
    B.
    N2O
    C.
    N2O5
    D.
    N2O3

  5. Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid ?

  6. A.
    p
    B.
    2 p
    C.
    0.5 p
    D.
    0.25 p

  7. While the bin cards are used in the effective stores management, the queing theory is associated with the __________ time.

  8. A.
    waiting
    B.
    idle
    C.
    inspection
    D.
    tool replacement

  9. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.

  10. A.
    10
    B.
    20
    C.
    30
    D.
    40

  11. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

  12. A.
    atoms
    B.
    neutrons
    C.
    nucleons
    D.
    electrons

  13. The product of a commercial direct reduction process is

  14. A.
    liquid iron
    B.
    solid iron
    C.
    sponge iron
    D.
    iron saturated with carbon

  15. In the diving apparatus, helium is used along with oxygen, because it is

  16. A.
    easily available.
    B.
    not soluble in blood at high pressure.
    C.
    lighter than nitrogen.
    D.
    completely miscible with oxygen.

  17. Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

  18. A.
    conductor
    B.
    insulator
    C.
    semi-conductor
    D.
    none of these

  19. During sensible cooling of air, its wet bulb temperature

  20. A.
    decreases but dew point remains constant.
    B.
    increases but dew point remains constant.
    C.
    increases & the dew point decreases.
    D.
    decreases & the dew point increases.