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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
- Give tw0 example for chemical reactions in which precipitate is form...
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- What does one mean by exothermic and endothermic reactions? Give examp...
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- What is an alloy ? Give two examples for alloys.
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- What is a photochemical reaction? Give one example.
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- What do you mean by precipitation reaction ?
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- How would you write 2 molecules of Oxygen and 5 molecules of Nitrogen ...
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- What do you mean by corrosion? How can you prevent it ?
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- Explain rancidity.
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- MnO(2)+4HCl rarr MnCl(2)+2H(2)O+Cl(2) In the above equation, name th...
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- Which are known as molecules ?
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- Expand IUPAC.
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- What are the reactants and products in a chemical reaction?
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- In the refining of silver, the recovery of silver from silver nitrate ...
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- What is the difference between 2N and N2?
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- Mohan said "O2 differs from O," Do you agree? Justify.
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- The atomic number (Z) of an element is 6. name the element.
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- Write any one precautions in doing the experiment chromatography.
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- In a class, a teacher asked students to write the molecular formula of...
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- Anitha wrote the formula for oxygen molecule as 2O. Is it correct or n...
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- Ravi wrote the symbols for sodium as “S” and symbol for potassium as...
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