1. If a metal's ore is titled 'pyrites', then it most probably contains _______.   sulfur   chlorine   nitrogen   oxygen   Hint Half-n-half Clue   2. Sodium is very reactive and may burn on exposure to air. Therefore, it is kept under _______.   ice   acids   oil   water   Half-n-half Clue   3. Metals are usually good conductors of heat and electricity.   True   False   4. Which of the following metals is a liquid at room temperature?   Tungsten   Cadmium   Sodium   Mercury   Half-n-half Clue   5. Which metal is extracted from the ore 'hematite'?   Iron   Aluminum   Manganese   Tin   Half-n-half Clue   6. Bronze is an alloy of _______.   lead and copper   barium, zinc and iron   copper and zinc   copper and tin   Half-n-half Clue   7. Which metal is extracted from the ore 'bauxite'?   Iron   Tungsten   Gold   Aluminum   Half-n-half Clue