Immersion rods fro hetaing liquids are made up of metallic substances.Choose the correct inference for the given statement.
they are be beaten into sheet
they can be drawn into wires
they are one of good condutor of heat and eletricty
it is easy to maintain
Answers
Answer:
a) Aluminium is one of the less reactive metals, so it does not react with food items and does not alter the taste. Moreover, being a metal; aluminium is highly malleable and can be made into very thin foils which are perfect for wrapping food.
b) Immersion rods for heating liquids are made up of metallic substances because metals are good conductors of heat and electricity. The immersion rod needs electric supply to get heated and in turn to heat liquids.
c) Copper is less reactive than zinc. This is the reason, copper cannot displace zinc from its salt solution.
d) Sodium and potassium are highly reactive metals. If kept in open, they readily react with oxygen in the atmosphere. The reaction is so quick that sodium and potassium easily catch fire when exposed to air. To prevent accidental fire, they are stored in kerosene.
Explanation:
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