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Give scientific reasons: Lemon or tama...

Give scientific reasons:
Lemon or tamarind is used for cleaning copper vessels turned greenish

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BAL BHARTI-METALLURGY-Exercise
  1. Explain the terms. Minerals

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  2. Explain the terms. Gangue

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  3. Give scientific reasons: Lemon or tamarind is used for cleaning copp...

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  4. Generally the ionic compounds have high melting points

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  5. Give scientific reasons: Sodium is always kept in kerosene

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  6. Give scientific reasons for the following: Pine oil is used in the fr...

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  7. Anodes need do be replaced from time to time during the electrolysis o...

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  8. Explain the following: When a copper coin is dipped in silver nitrat...

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  9. Explain the following: The electronic configuration of metal A is 2...

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  10. Draw a neat and labelled diagram Magnetic separation method

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  11. Draw a neat and labelled diagram Froth floatation method

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  12. Draw a neat labelled diagram. Electrolytic reduction of alumina.

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  13. Draw a neat and labelled diagram Hydraulic separation

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  14. Write chemical equation for the following events: Aluminium comes in...

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  15. Write chemical equation for the following events: Iron filings are ...

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  16. Write chemical equation for the following events: A reaction was br...

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  17. Write chemical equation for the following events: Electrolysis of a...

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  18. Write chemical equation for the following events: Zinc oxide is dis...

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  19. Complete the following statement using every given options. During ...

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  20. Answer the following questions: Divide the metals Cu, Zn, Ca, Mg, Fe,...

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