1. Why sodium does not occur in the free state?
2. Why Gold is found in the free state?
3. Why copper is used for electrical wiring?
4. Why silver is used in making mirrors ?
5. Why iron is used to construct bridges and houses?
Answers
1. Why sodium does not occur in free state?
According to Reactivity Series, Sodium is a highly reactive metal. So, It is usually found in combined state.
2. Why Gold is found in the free state?
According to Reactivity Series, Gold is least reactive. So, it does not react with any element and is usually found in free state.
3. Why copper is used for electrical wiring?
Copper is a good conductor of electricity. It shows least resistance to the flow of current through it. So, Copper is used in this electrical wiring.
4. Why silver is used in making mirrors?
Silver has a highly reflective surface. So, thin sheets of silver are struck behind mirrors.
5. Why iron is used to construct bridges and houses?
Iron has high tensile strength. It can take heavy loads. So, iron is used in bridges and houses.