20. List any four properties of black body
21.What is the Diffusion/
22.State Fick’s law of diffusion.
23.What is the mass transfer operations? List any four types of mass transfer operations.
24.Write a note on superstation of liquid.
25.What is relative humidity?
Answers
20. As a consequence of this definition, the blackbody has three properties: (a) it is the surface that emits most for a given temperature and wavelength, (b) blackbody radiation does not depend on the direction, that is, blackbody radiation is diffuse, and (c) total blackbody radiation in a vacuum depends only on ...
21. Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.
22. Fick's law of diffusion describes how particles under random thermal motion tend to spread18 from a region of higher concentration to a region of lower concentration. This principle is illustrated by opening a perfume bottle in the corner of a closed room.
23. Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, and distillation.
25. the amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same temperature.
SORRY. Don't know question 24.