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An arrow pointing downwards in a chemica...

An arrow pointing downwards in a chemical reaction shows……

A

Evolution of gas

B

Formation of precipitate

C

Oxidation

D

Displacement

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. Rupa says "xx+ y rarr xxy +Q indicates an endothermic reaction". Can y...

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

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

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

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  5. Which reaction is a reversible reaction ?

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

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

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

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

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

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

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

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  13. A balanced equation contains

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  14. Unbalanced equation is called

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

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  16. Which of the following statement is wrong ?

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

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

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  19. When HCl reacts with zinc. Which gas will evolved ? How can you prove ...

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  20. Where does the arrow head point face in a chemical equation ? Why ?

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