CBSE Class 9 Chemistry Basic Units Of Matter
Sample Q&A
- What is the difference between Atoms and Molecules and Moles?
- What is variable valency?
- write the molecular formula of alluminium oxide
- what is independent existence
- what are atoms
- smallest atom
- convert the following temperature into Kelvin scale 30 degree Celsius 27 degree Celsius
- a cork float in water while the iron nail sink .give region
- how to calculate a molecular mass?
- an element x show 2 valancies of 3&5. workout the formula of 2 oxide of this element.
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