Q)give reasons.
1) Aluminum foil are used to wrap food items.
2) Immersion rods for heating liquids are made up of metallic substances.
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Ans: 1) Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can be beaten to in sheets to form thin wrapping sheets. Moreover it does not react with food items.
2) Immersion rods are made of metallic substances metals are good conductors of heat and electricity. They get hot very soon when electric current is passed through them and thus warm the water.
Answered by
3
Ans: 1) Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can be beaten to in sheets to form thin wrapping sheets. Moreover it does not react with food items.
2) Immersion rods are made of metallic substances metals are good conductors of heat and electricity. They get hot very soon when electric current is passed through them and thus warm the water.
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