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Rupa says "xx+ y rarr xxy +Q indicates a...

Rupa says "xx+ y `rarr` xxy +Q` indicates an endothermic reaction". Can you support it ? Why ?

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. X - Y leftarrow Z. Raja wrote a chemical equation like so ? What are t...

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

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

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

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

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

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  7. Which reaction is a reversible reaction ?

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

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

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

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

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  12. By using which of the following one, we can calculate tha number of mo...

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  13. Which of the following is the colour of copper sulphate (CuSO4) ?

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  14. The process of preparing slaked lime by adding water to quicklime is t...

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  15. A balanced equation contains

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  16. Unbalanced equation is called

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  17. xH(2)+yO(2)rarr zH(2)O. The values of x, y, z are

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  18. Which of the following statement is wrong ?

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  19. Which of the following statement is / are true ?

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  20. HCl is reacting with zinc granules. How can you say that it is an exot...

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