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Give reasons: Carbonate and suphide ores...

Give reasons: Carbonate and suphide ores are usually converted into oxides during the process of extraction

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It is easier to obtain a metal from its oxide, as compared to its sulphides and carbonates. Therefore, prior to reduction, the metal sulphides and carbonates must be converted into metal oxides.
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NAND LAL PUBLICATION-METALS AND NON-METALS-EXERCISES
  1. An element reacts with oxygen to give a compound with a high melting p...

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  2. Food cans are coated with tin and not with zinc because:

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  3. You are given a hammer, a battery, a bulb ,wires and a switch How coul...

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  4. You are given a hammer, a battery, a bulb ,wires and a switch How coul...

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  5. What are amphoteric oxides? give two examples of amphoteric oxides?

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  6. Name two metals which will displace hydrogen from dilute acids, and tw...

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  7. In the electrolytic refining a metal M what would you take as the anod...

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  8. Pratyush took sulphur powder on a spatula and heated it. He collecte...

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  9. Pratyush took sulphur powder on a spatula and heated it. He collected ...

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  10. Pratyush took sulphur powder on a spatula and heated it. He collected ...

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  11. State two ways to prevent the rusting of iron

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  12. What type of oxides are formed when non-metals combine with oxygen?

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  13. Give reasons:Platinum,gold and silver are used to make jewellery

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  14. Give reasons: sodium,potassium and lithium are stored under oil.

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  15. Give reasons: aluminium is highly reactive metal, yet it is used to ma...

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  16. Give reasons: Carbonate and suphide ores are usually converted into ox...

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  17. You must have seen trainshed copper vessels being cleaned with lemon o...

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  18. Differentiate between metals and non-metals on the basis of their chem...

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  19. A man went door to door posing as a goldmith he promised to bring back...

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  20. Give the reason why copper is used to make hot water tanks but steel (...

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