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प्रश्न
Give four examples of non-metallic elements.
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उत्तर
Examples : Hydrogen, oxygen, nitrogen, carbon, chlorine, sulphur, phosphorus, etc.
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संबंधित प्रश्न
Name the main metal present in the following:
Chocolate wrappers
State four difference between compounds and mixtures.
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
By using a separating funnel
Fill in the blank:
________ and _______ are pure substances.
Fill in the blank
A pure substance has definite _______ and constant _________.
Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
Differentiate between the following.
solution and suspension
Name the substance you will add to speed up sedimentation.
Why is filtration a better technique than sedimentation and decantation ?
Loading is basically speeding up _____.
