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why respiration is considered an exother...

why respiration is considered an exothermic reaction?

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CHETANA PUBLICATION-Chemical Reactions and equations-EXAMPLE
  1. What type of reaction takes place when vegatable matter is converted t...

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  2. What is rust?Write the chemical formula .

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  3. why respiration is considered an exothermic reaction?

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  4. Name the factors on which the speed of a chemical reaction depends

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  5. What is meant by reactants?

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  6. What is meant by the term products of a chemical reaction?

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  7. When carbon dioxide is passed through lime water it turns milky.Why?

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  8. What type of precipitate reaction is this Na2SO4+BaCl2rarrBaSO4+2NaCl.

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  9. What do you understand by precipitation reaction? Explain with example...

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  10. Which solution is used in voters ink?

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  11. What happens when a piece of zinc metal is added to copper sulphate so...

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  12. Which is the oxidant used for purification of drinking water?

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  13. Why is potassium permanganate used for cleaning of water tanks?

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  14. Same exampels of redox reaction are given identify the reductants and ...

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  15. Write the reaction of formation of Fe^2+) by the reduction Fe3+ by mak...

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  16. Write two conditions necessary for rusting of iron.

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  17. What are the change that take place when fats and oils are oxidized?

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  18. Define the following/write notes: Physical change

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  19. Define the following/write notes: Chemical Change

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  20. Define the following/write notes: Chemical Reaction

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