_____________ extractor is used for the concentration of radioactive nuclear waste?

Related Mcqs:

1. _______________ extractor is used for the concentration of radioactive nuclear waste?

   A. Pulsed column
   B. Sieve plate
   C. Mixer-settler
   D. Bollman

2. Radioactive nuclear waste is treated in____________________?

   A. Mixer-settler extractor
   B. Rotating-disc contactor
   C. Pulsed column extractor
   D. Bollman extractor

3. ___________________ extractor uses centrifugal force for separating the two phases?

   A. Treybal
   B. Scheibel
   C. Podbielniak
   D. None of these

4. In a counter-current extractor, as the axial mixing increases, the extraction efficiency______________________?

   A. Increases
   B. Decreases
   C. Remains unchanged
   D. Depends on the pressure of the system

5. The equipment used in the extraction of highly corrosive radioactive liquids is_______________________?

   A. Pulse column
   B. Spray column
   C. Mixer settler
   D. Baffle tower

6. The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if___________________?

   A. NSc = 1
   B. NSc = NPr = NLe
   C. NPr = NLe
   D. NSc = NLe

7. The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?

   A. Differential heat of adsorption
   B. Heat of wetting
   C. Integral heat of adsorption
   D. None of these

8. Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ‘A’ to that of component ‘B’, when_________________?

   A. Only vapor phase follows Raoult’s law
   B. Only liquid phase obeys Dalton’s law
   C. Liquid phase obeys Dalton’s law and vapor phase obeys Raoult’s law
   D. Vapor phase obeys Dalton’s law and liquid phase obeys Raoult’s law

9. At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent __________________?

   A. Increases
   B. Decreases
   C. Remains unchanged
   D. Increases exponentially

10. An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is ?

    A. 9.21
    B. 4.605
    C. 100
    D. 0.001