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Give reason : The blue colour of aqueo...

Give reason :
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.

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ICSE-ELECTROLYSIS-ADDITIONAL QUESTIONS FOR PRACTICE
  1. An electrolytic cell is set-up using two platinum electrodes and an aq...

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  2. An electrolytic cell is set-up using two platinum electrodes and an aq...

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  3. An electrolytic cell is set-up using two platinum electrodes and an aq...

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  4. An electrolytic cell is set-up using two platinum electrodes and an aq...

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  5. Give reason : Carbon tetrachloride is a liquid but does not conduc...

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  7. Give reason : A graphite anode is preferred to other inert electrode...

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  8. Give reason : Ammonia is unionised in the gaseous state but in the...

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  9. Give reason : In the electrolysis of acidified water dilute sulphuri...

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  10. Give reason : Electrolysis of molten lead bromide is considered to b...

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  11. Give reason : The blue colour of aqueous copper sulphate fades when ...

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  12. Give reason : Lead bromide undergoes electrolytic dissociation in th...

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  13. Give reason : The ratio of hydrogen and oxygen formed at the cathod...

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  14. How electrolysis can be used in extraction of aluminium? Why aluminium...

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  15. With respect to electrical properties, give two differences between an...

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  16. State three differences between an atom and an ion.

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  17. Give one example in substance which contains : ions only,

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  18. Give one example in substance which contains : molecules only,

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  19. Give one example in substance which contains : both ions and molec...

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  20. Differentiate ionisation and dissociation

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