1. An alloy is a   Mixture   Solid Solution of two or more metals   Element in impure form   Compound of three elements   Hint Half-n-half Clue   2. Often to prevent corrosion, metals are galvanized by covering them with a layer of   Sodium   Zinc   Copper   Tin   Half-n-half Clue   3. Sodium is very reactive and may burn on exposure to air, hence it is kept under   Oil   Water   Ice   Acids   Half-n-half Clue   4. Which of the following metals is liquid at room temperature   Sodium   Cadmium   Mercury   Tungsten   Half-n-half Clue   5. Rocks rich in metals are known as   Allotropes   Ores   Slag   Metalloids   Half-n-half Clue   6. If a metal ore is titled "pyrites" then it most probably has   Chlorine   Sulphur   Nitrogen   Oxygen   Half-n-half Clue   7. Brass is   A Compound   A Mixture   An Alloy   An Element   Half-n-half Clue