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Which of the following metals will chang...

Which of the following metals will change blue colour of copper sulphate solution ?

A

Platinum

B

silver

C

Magnesium

D

Iron

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formula of copper sulphate

• Take three iron nails and clean them by rubbing with sand paper. • Take two test tubes marked as (A) and (B). In each test | tube, take about 10 ml copper sulphate solution. • Tie two iron nails with a thread and immerse them 'carefully in the copper sulphate solution in test tube B for about 20 minutes [Fig. (a)]. Keep one iron nail aside for comparison. • After 20 minutes, take out the iron nails from the copper sulphate solution. • Compare the intensity of the blue colour of copper sulphate solutions in test tubes (A) and (B) (Fig. (b)]. Also, compare the colour of the iron nails dipped in the copper sulphate solution with the one kept aside [Fig. - (b)]. On the basis of activity , give the answers of th following questions : What is the colour of copper sulphat solution in test tube A ?

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MODERN PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-EXERCISE
  1. Give one example of : a double displacement reaction.

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  2. Give one example of : a combination reaction between element and comp...

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  3. Which of the following metals will change blue colour of copper sulpha...

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  4. In the reaction : CuO+H2 rarr Cu+H2O Name the substance which is

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  5. Which of the following are oxidising agent in the following reactions?...

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  6. Which of the following is the strongest oxidizing agent?

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  7. Balance the following equations: Fe2O3+C rarr Fe+CO

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  8. Which of the following is redox reaction ?

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  9. Consider the reaction 3MnO2+4Al rarr 3Mn+2Al2O3 Does aluminium act ...

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  10. Name the substance oxidise, reduced, oxidising agent and reducing agen...

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  11. Define oxidising agent and reducing agent on the basis of oxidation nu...

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  12. Define oxidising agent and reducing agent on the basis of oxidation nu...

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  13. Name the substance oxidise, reduced. Ca+Cl2 rarr CaCl2

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  14. Complete the statements: They change of odour and flavour of oily an...

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  15. Complete the statements: Reduction is a process which involves…… of ...

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  16. Consider the reaction : PbO+C rarr CO2 + Pb Name the reaction

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  17. Consider the reaction : PbO+C rarr CO2 + Pb Balance the equation.

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  18. Consider the reaction : PbO+C rarr CO2 + Pb Name the substance redu...

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  19. Consider the reaction : PbO+C rarr CO2 + Pb Name the reducing agent

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  20. Consider the reaction : PbO+C rarr CO2 + Pb Name the reaction

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