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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:
Haemoglobin
Name the main metal present in the following:
Chlorophyll
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
Fill in the blank
A pure substance has definite _______ and constant _________.
Differentiate between the following.
solution and suspension
How can you separate iron metal from non-magnetic impurities ?
Name the substance you will add to speed up sedimentation.
Why is filtration a better technique than sedimentation and decantation ?
Name the techniques used to separate a solid from its solution.
Differentiate between the terms elements, compounds, and mixtures with suitable examples.
