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What is a chemical equation?...

What is a chemical equation?

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. What should we do, if two or more reactants are there writing a chemic...

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  2. Why should we balance a chemical equation?

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  3. What is a chemical equation?

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  4. By a balanced chemical equation, what do we know about atoms ?

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  5. How many steps are there in balancing the equation ?

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  6. Is there any imp0rtance of molecular formulae in writing the equation ...

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  7. How do the co-efficients of the substances would be, while balancing t...

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  8. Can we change the ratio of atoms in the molecules of the substances wh...

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  9. Sitara told that a chemical reaction occurs in ripening of grapes. Is ...

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  10. X - Y leftarrow Z. Raja wrote a chemical equation like so ? What are t...

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  11. Zn + HCl rarr ZnCl2 + H2.Is it a balanced equation ? Give the reason.

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  12. Rupa says "xx+ y rarr xxy +Q indicates an endothermic reaction". Can y...

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  13. 4 Agcl rarr 4 Ag + 2 Cl2. Is it a balanced equation ? Yet it is not in...

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  14. An arrow pointing downwards in a chemical reaction shows……

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  15. A solution of sodium carbonate reacts with Ca(OH)2 to give

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  16. Which reaction is a reversible reaction ?

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  17. Which of the following precipitate is formed, on mixing lead nitrate P...

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  18. Which of the following is formed, when magnesium burns in air ?

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  19. Which of the following precipitate is formed on mixing sodium with bar...

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  20. Which of the following is, when the black coating that appears when co...

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