10. Mention a suitable technique that can be used for the separation of the following mixtures
a neat diagram and give principle behind the technique:
a) Dyes present in ink
b) Mixture of petrol and kerosene
11.a) How are the components of air separated ? Explain the technique with the help of a neat
diagram.
b) Which atmospheric gas gets liquefied first and why?
Answers
Explanation:
a) Chromatography is a method of separating out materials from a mixture. Ink is a mixture of several dyes and therefore we can separate those colors from one another using chromatography. When ink is exposed to certain solvents the colors dissolve and can be seperated out.
b) A mixture of two miscible liquids having a difference in their boiling points of more than 25 °C can be separated by simple distillation. The mixture of kerosene and petrol is taken in a distillation flask with a thermometer fitted in this method. It is also considered a beaker, water condenser, and a Bunsen burner.
c) An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases. The most common method for air separation is fractional distillation.
d?)When air is cooled, Gas is having the highest boiling point can be compressed easily so it will form liquid first. Oxygen has the highest boiling point so it forms the liquid first as the air is cooled.
