1. Which metal is the best conductor of electricity?
2. Which of the following is not a property of metals?
3. Which metal is liquid at room temperature?
4. Which gas is released when metals react with acids?
5. Which non-metal is essential for life?
6. Which metal is used in galvanisation?
7. Which metal is most reactive among the following?
8. Which of these non-metals is used in the purification of water?
9. Which metal is commonly used in electrical wiring?
10. Which of these is a property of non-metals?