Question

Give reasons for the following
(a) Aluminium foils are used to wrap food items.
(b) Immersion rods for heating liquids are made up of metallic substances.
(c) Copper cannot displace zinc from its salt solution.
(d) Sodium and potassium are stored in kerosene.​

Answer 1

Answer:

(a) aluminium foils are used to wrap food items because aluminium is malleable soft and does not react with food items.

(b) metals are good conductors of heat and electricity so immersion rods are made up of metallic substances.

(c) copper is less reactive than zinc so it cannot displace zinc from its salt solution.

(d) sodium and potassium are very reactive they react with air and water so they are stored in kerosene.

Explanation:

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Answer 2

Answer:

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