1. With which metal does oxygen combine to form rust?   Platinum   Gold   Silver   Iron   Hint Half-n-half Clue   2. Metals are obtained from their oxides by   Reduction   Oxidation   Electrolytic Separation   Roasting   Half-n-half Clue   3. Metals are usually good conductors of heat and electricity.   True   False   4. Bronze is an alloy of   Barium, Zinc and Iron   Lead and Copper   Copper and Tin   Copper and Zinc   Half-n-half Clue   5. Iron is magnetic.   True   False   6. Rocks rich in metals are known as   Slag   Metalloids   Ores   Allotropes   Half-n-half Clue   7. Which metal is extracted from Bauxite?   Gold   Tungsten   Aluminum   Arsenic   Half-n-half Clue