Give reason why.
(a) Copper metals used for making electric wires.
(b) Graphite is used for making electrode in a cell.
(c) Immersion rods for heating liquids are made of metallic substances.
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Answer: Reasons.
(a) Copper metals used for making electric wires because it is thermal resistant, it is inexpensive and also it is ductile.
(b) Graphite is used for making electrode in a cell because it is a good conductor of electricity and also has valence electrons; it is very cheap and also non corrosive.
(c) Immersion rods for heating liquids are made of metallic substances because they are good conductors of electricity and heat. They get heated fast.
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Answer:
(a) Copper metal is used for making electric wires because it is highly ductile in nature. It is a good conductor of electricity. ... (c) Immersion rods for heating liquids are made of metallic substances because metallic substances are good conductors of electricity and heat.
Explanation:
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