11. What is the reflux ratio at total reflux?
12. The diffusivity (D) in a binary gas mixture is related to the pressure (P) as
13. Which of the following same diameter columns gives lowest pressure drop per unit height?
14. Reverse osmosis is also called
15. Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer.
16. Mass transfer co-efficient 'K' according to penetration theory varies with mass diffusivity as
17. For absorbing a sparingly soluble gas in a liquid
18. Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.
19. The equipment used in the extraction of highly corrosive radio active liquids is
20. The value of $$\frac{{{{\text{N}}_{\text{A}}}}}{{{{\text{N}}_{\text{A}}} + {{\text{N}}_{\text{B}}}}},$$ for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is
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