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प्रश्न
Fill in the blank:
________ and _______ are pure substances.
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उत्तर
Elements and compounds are pure substances.
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संबंधित प्रश्न
Name the main metal present in the following:
Chlorophyll
What do you understand by :
Metalloids
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
Filtration
Fill in the blank
_______ are made up of same kind of atoms.
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.
What is centrifugation ? Also write the principle on which it works.
Loading is basically speeding up _____.
Write the differences between elements and compounds and give an example for each.
