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प्रश्न
Write true or false
All pure substances have characteristic melting and boiling points.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Name the main metal present in the following:
Chlorophyll
State four difference between compounds and mixtures.
Define:- Filtration
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Sedimentation and decantation
Differentiate between the following.
solution and suspension
How can you separate iron metal from non-magnetic impurities ?
Why is filtration a better technique than sedimentation and decantation ?
What is centrifugation ? Also write the principle on which it works.
Name the techniques used to separate a solid from its solution.
Write the differences between elements and compounds and give an example for each.
