Question : Copper wires are generally used for electrical power transmission instead of iron wire because:
Option 1: Copper is cheaper than iron
Option 2: Copper is lighter than iron
Option 3: Copper is a good conductor of electricity than iron
Option 4: Copper can take higher power than iron
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Correct Answer: Copper is a good conductor of electricity than iron
Solution : The correct answer is Copper is a good conductor of electricity than iron.
Copper wires are preferred for electrical transmission over iron wires due to their superior electrical conductivity and lower resistivity. They exhibit reduced oxidation and possess lower resistance.
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Question : What do you call a component of identical size that offers a higher resistance to electricity?
Option 1: Poor conductor
Option 2: Semiconductor
Option 3: Good conductor
Option 4: Very good conductor
Question : Bronze is an alloy of
Option 1: Copper and Tin
Option 2: Copper and Zinc
Option 3: Copper and Iron
Option 4: Iron and Nickel
Question : Which among the following metals is used for galvanisation?
Option 1: Zinc
Option 2: Copper
Option 3: Iron
Option 4: Silver
Question : The first metal used by man was
Option 1: Aluminium
Question : Which of the following metals can deposit copper from copper sulphate solution?
Option 1: Platium
Option 2: Mercury
Option 4: Gold
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