Reason out I — task. Science State Board, Class 8.

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Give reasons for the following.

a. Aluminum foils are used to wrap food items.

Reason:

Aluminium is soft, cheapest and when in contact with food items, it gives flavour to food items. Hence, it is used to wrap food items.
Aluminium is malleable, soft and and non-reactive with food. Hence, it is used to wrap food items. Hence, it is used to wrap food items.

b. Immersion rods for heating liquids are made up of metallic substances.

Reason:

Metals are heavy, so they easily conduct electricity.
While heating, metals do not melt and does not react with liquids.
Metals are good conductors of heat and electricity, so immersion rods are made up of metallic substances.

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