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Give reasons for the following. 

i) Silver is used in making mirrors.

ii) Aluminium is used to make electrical wires. 

iii) Sour food substances should not be stored in aluminium utensils. 

iv) Iron is used in constructing bridges and houses.

1 Answer

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i) Silver has high reflecting power.

ii) Aluminimum is good conductor of electricity.

iii) Sour substances contain acids which react with aluminimum utensils to form toxic substances. 

iv) Iron is hard, strong and rigid material.

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