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प्रश्न
Name the main metal present in the following:
Chalk
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उत्तर
Chalk - Calcium
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संबंधित प्रश्न
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
By using a separating funnel
Fill in the blank
_______ are made up of same kind of atoms.
Fill in the blank
A pure substance has definite _______ and constant _________.
Fill in the blank
Use of a __________ to separate the components of a mixture of solids is based on the difference in the size of the components.
Write true or false
All pure substances have characteristic melting and boiling points.
Differentiate between the following.
solution and suspension
Why is filtration a better technique than sedimentation and decantation ?
Write the differences between elements and compounds and give an example for each.
When two or more elements combine together they form ______.
