1. Which metal is extracted from the ore 'hematite'?   Tin   Aluminum   Iron   Manganese   Hint Half-n-half Clue   2. Which of the following does not belong to this group?   Iron   Oxygen   Sodium   Lead   Half-n-half Clue   3. Which metal is extracted from the ore 'bauxite'?   Tungsten   Gold   Aluminum   Iron   Half-n-half Clue   4. Rust on iron is basically _______.   a nitride   an oxide   a chloride   a sulphide   Half-n-half Clue   5. Which of the following metals is often found in the pure state?   Magnesium   Iron   Gold   Aluminum   Half-n-half Clue   6. Which of the following metals is a liquid at room temperature?   Cadmium   Sodium   Mercury   Tungsten   Half-n-half Clue   7. An alloy is _______.   an element in the impure form   a solid solution of two or more metals   a mixture of three elements   a compound of three elements   Half-n-half Clue