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Answer the following questions with resp...

Answer the following questions with respect to the electrolytic reduction of aluminium :
Explain why the anode has to be periodically replaced.

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The metal anode has to be replaced periodically.

ICSE-METALLURGY-ADDITIONAL QUESTIONS FOR PRACTICE
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  2. What is an amalgam ? State its use with an example.

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  3. Name an alloy of :

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  4. Explain the following: A neutral gas other than oxygen is formed at th...

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  5. Complete and balance the following equation : Al2 O3. 2H2 O + NaOH to...

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  6. Complete and balance the following equation : Al2 O3. 2H2 O + NaOH to

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  7. Give the product when Al2 O3. 2H2 O reacts with Sodium hydroxide

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  8. Answer the following questions with respect to the electrolytic reduct...

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  9. Answer the following questions with respect to the electrolytic reduct...

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  10. Answer the following questions with respect to the electrolytic reduct...

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  11. Answer the following questions with respect to the electrolytic reduct...

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  12. Give reason why : Do metal ions always get discharged at the cathod...

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  13. Give reason why : Sodium and potassium cannot be exposed to air?

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  14. Give reason why : Is sodium more reactive than aluminium ?

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  16. Give reason why : Is a neutral gas other than oxygen formed at the ...

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  17. Starting from each of the following reactants, how would you obtain th...

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  18. Starting from each of the following reactants, how would you obtain th...

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  19. Starting from each of the following reactants, how would you obtain th...

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  20. Starting from each of the following reactants, how would you obtain th...

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