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Metallic oxides of zinc, magnesium and c...

Metallic oxides of zinc, magnesium and copper were heated with the following metals.

In which cases will you find displacement reactions taking place?

Text Solution

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Magnesium (Mg) will displace both zinc (Zn) and copper (Cu) from their oxides
Mg + ZnO `rarr` MgO + Zn
Mg + CuO `rarr` MgO + Cu
Zinc will displace copper from copper oxide.
Zn + CuO `rarr` ZnO + Cu
Copper is least reactive and will not initiate displacement reaction.
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DINESH PUBLICATION-METALS AND NON-METALS-N.C.E.R.T
  1. Name two metals which are found in nature in the free state.

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  2. What chemical process is used for obtaining a metal from its oxide?

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  3. Metallic oxides of zinc, magnesium and copper were heated with the fol...

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  4. Which metals do not corrode easily?

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  5. What are alloys?

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  6. Which of the following pairs will give displacement reactions?

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  7. Which of the following methods is suitable for preventing an iron fryi...

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  8. An element reacts with oxygen to give a compound with a high melting p...

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  9. Food cans are coated with tin and not with zinc because

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  10. You are given a hammer, a battery, a bulb, wires and a switch. (a) H...

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  11. What are amphoteric oxides? Give two examples of amphoteric oxides.

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

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  13. In the electrolytic refining of a metal M, what would you take as the ...

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

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  15. State two ways to prevent the rusting of iron.

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  16. What type of oxides is formed when non-metals combine with oxygen?

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  17. Give reasons (a) Platinum, gold and silver are used to make jeweller...

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  18. You must have seen tarnished copper vessels being cleaned with lemon o...

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  19. A man went door to door posing as a goldsmith. He promised to bring ba...

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  20. Give reasons why copper is used to make hot water tanks and not steel ...

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