Question

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Answer 1

Answer:

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(a) Aluminium foils are used to wrap food items because aluminium metal is malleable. Therefore, it can be beaten into thin foils.

(b) Metals are good conductors of heat and electricity. Therefore, immersion rods for heating liquids are made of metallic substances.

(c) Copper cannot displace zinc from its salt solution.

Cu(s) + ZnSO 4(aq) = No reaction.

Metal can’t displace more reactive metal from its salt in an aqueous solution

(d) Sodium and potassium are stored in kerosene because they are highly reactive elements. They can easily catch fire even when in contact with air.