Question

1. Name two metals which are poor conductors of heat.
2. What will be the change in colour of copper sulphate solution when magnesium is added to it?
3. Write the name of the metal which is used in household electric wiring.
4. Name one metal which is highly unreactive.
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Answer 1

Answer:

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Mercury and lead are two poor conductors of heat.

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Aqueous copper sulfate solution is blue from the colour of the hydrated Cu++ cations and since the sulfate anion is colourless. The colour of the copper sulfate does not change during the reaction with magnesium metal.

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In the case of household wiring, the conductor itself is usually copper or aluminum (or copper-sheathed aluminum) and is either a solid metal conductor or stranded wire. Most wires in a home are insulated, meaning they are wrapped in a nonconductive plastic coating

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Copper is highly unreactive metal. Here are some more examples palladium,silver,gold ,platinum etc

Answer 2

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Explanation:

1. Mercury and lead are two poor conductors of heat.

2. Aqueous copper sulfate solution is blue from the colour of the hydrated Cu++ cations and since the sulfate anion is colourless. The colour of the copper sulfate does not change during the reaction with magnesium metal.

3.In the case of household wiring, the conductor itself is usually copper or aluminum (or copper-sheathed aluminum) and is either a solid metal conductor or stranded wire. Most wires in a home are insulated, meaning they are wrapped in a nonconductive plastic coating.

4.copper