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When a strip of copper is placed in the ...

When a strip of copper is placed in the solution of silver nitrate, the solution become blue. Why ?

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MODERN PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-EXERCISE
  1. Identify the type of chemical reaction taking place in the following: ...

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  2. What is oxidation reaction?

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  3. When a strip of copper is placed in the solution of silver nitrate, th...

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  4. Name the oxidising agent in the reaction. 2Na +Cl2 rarr 2NaCl

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  5. Give an example of a photochemical reaction

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  6. What is reduction reaction?

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  7. Why do we apply paint on iron articles?

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  8. Write a reaction when silver chloride exposed to light.

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  9. What is the colour of NO2 gas?

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  10. Which gas is evolved on heating calcium carbonate?

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  11. Name tha gas obtained when dil. H2SO4 is added to a zinc piece.

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  12. What is the colour of coating of copper oxide?

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  13. When iron is heated with sulphur, iron sulphide is formed. What is the...

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  14. What is the colour of residue left when ferrous sulphate is heated?

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  15. Use of electrolysis is in:

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  16. Identify the substances that are oxidised and the substance that are r...

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  17. What is the colour of product formed when barium chloride solution is ...

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  18. Say which of the following is true and false There is no need to bal...

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  19. Say which of the following is true and false The reverse of the reac...

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  20. Say which of the following is true and false The reaction : 2H2O+Hea...

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