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प्रश्न
The dyes present in fountain pen ink can be separated by the technique of :
पर्याय
fractional distillation
infrared photography
crystallisation
chromatography
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उत्तर
chromatography
Chromatography is the technique used to separate the contents of a mixture, where solute particles are in extremely small quantity.
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संबंधित प्रश्न
Fill in the blank
All matter is made up of tiny particles called ______
What are the characteristics of matter?
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?
Name a non-metal which is a good conductor of electricity.
Name a non-metal which is a good conductor of electricity.
Give reason why copper metal is used for making electric wires.
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Which one of the following is not a metalloid ?
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Define Foam Give one example.
What is meant by the concentration of a solution ?
What is the effect of temperature on the solubility of solids in liquids ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process by which common salt is obtained from sea-water.
Explain the meaning of the term matter with special reference to the term ‘substance’.
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
All the matter made of ______.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Solids possess very high kinetic energy.
Define the term matter.
