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Give reason: Aluminium is a highly rea...

Give reason:
Aluminium is a highly reactive metal, yet it is used to make utensils for cooking

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Though aluminium is a highly reactive metal, it is resistant to corrosion. This is because aluminium reacts with oxygen present in air to form a thin layer of aluminium oxide. This oxide layer is very stable and prevents further reaction of aluminium with oxygen. Also, it is light in weight and good conductor of heat. Hence, it is used to make cooking utensils.
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Give reasons (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

(a) What is corrosion? (b) Name any two metals which do not corrode easily. (c) What is the corrosion of iron known as? (d) Explain why aluminium is a highly reactive metal, still it is used to make utensils for cooking.

Two highly reactive metals.

The metal which is highly reactive

OSWAL PUBLICATION-METALS AND NON-METALS-NCERT Corner (Exercise Questions)
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  2. Food cans are coated with tin but not with zinc because

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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 of a metal M, what would you take as the ...

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

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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 is formed when non-metals combine with oxygen?

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  13. Gold, platinum and silver are used to make jewellery. Give reasons.

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  14. Give reason: Sodium, potassium and lithium are stored under oil

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  15. Give reason: Aluminium is a highly reactive metal, yet it is used to...

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  16. give reason for the following: Carbonate and sulphide ores are usual...

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

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  18. Differentiate between metal and non-metal on the basis of their chemic...

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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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