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- 1. Multiple Choice
The substance which combined together in a chemical reaction
Reactants
Products
Both a and b
None of these
- 2. Multiple Choice
The new substance formed as a result of chemical reaction
Reactants
Products
Both a and b
None of these
- 3. Multiple Choice
Dry ice is
Oxygen
Carbon dioxide
Solid Carbon dioxide
All the above
- 4. Multiple Choice
The bubbles that we see in the glass of a soft drink are due to the presence of_____ gas
Oxygen
Carbon dioxide
Nitrogen
Hydrogen
- 5. Multiple Choice
The law of conservation of mass was given by
Dalton
Proust
Lavoisier
Berzelius
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