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Chemical Engineering Basics-2 - Section-1
  1. The suction and delivery pressure for a two stage compressor are 1 and 25 atm respectively. The intermediate stage pressure would be around __________ atm.

    2. A.

     5
    B.

     10
    C.

     15
    D.

     20

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  2. Monazite deposits constitute an important source for the following metal.

    3. A.

     Thorium
    B.

     Titanium
    C.

     Molybdenum
    D.

     None of the above

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  3. Phosphorous is added to copper melt to

    4. A.

     Remove hydrogen
    B.

     Deoxidise the metal
    C.

     Improve fluidity
    D.

     Reduce shrinkage

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  4. Heating of ferromagnetic materials to a temperature above Curie temperature makes it

    5. A.

     Insulator for heat & electricity transmission
    B.

     Ferritic
    C.

     Behave like paramagnetic materials
    D.

     Superconductor

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  5. Particle nature of cathode rays is proved due to the fact that they

    6. A.

     Travel in a straight line
    B.

     Get deflected by magnetic electric field
    C.

     Produce fluorescence
    D.

     Heat the exposed material

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  6. Pick out the correct statement

    7. A.

     Jet engine can work, where there is no atmosphere
    B.

     Rocket engines cannot work, where there is no atmosphere
    C.

     Rocket engines carry oxygen required for the combustion in the form of oxidiser
    D.

     Jet engines also carry oxidiser

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  7. Which of the following is not the function of a volute casing provided in a centrifugal pump?

    8. A.

     To reduce the head loss in discharge
    B.

     To increase the pump efficiency
    C.

     To collect liquid from the periphery of the impeller and to transmit it to the delivery pipe at constant velocity
    D.

     To increase the pump discharge rate

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  8. 'Cryogenics' is concerned with the generation & use of low temperature in the range of

    9. A.

     0°K to 123°K
    B.

     0°C to - 123°C
    C.

     0°C to - 273°C
    D.

     0°K to 273°K

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  9. Which of the following is not an ore of copper?

    10. A.

     Cryolite
    B.

     Azurite
    C.

     Chalcopyrite
    D.

     Malachite

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  10. During solid state sintering of powders, the following mechanism can be active.

    11. A.

     Evaporation and condensation
    B.

     Solid state diffusion processes
    C.

     Liquid formation in grain boundaries
    D.

     Creation of more dislocations

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