Question

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

Answer 1

Explanation:

a) Aluminium dolls are used to wrap the food items because aluminium is the best conductor of heat and the food will remains as it is when wrapper or covered it with aluminium foil.

b) Question B is incomplete

c) Copper can't displayed zinc from its salt solution because copper is less reactive than zinc.

d) Sodium and Potassium are store in kerosene because when they comes contact with air they starts burning.

Answer 2

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