1. Fill in the missing word Acid + _______ = Salt + Water   Metal   Non Metal   Base   Oxygen   Hint Half-n-half Clue   2. Which of the following is not an allotrope of carbon   Diamond   Graphite   Charcoal   Silk   Half-n-half Clue   3. A substance that absorbs moisture is known as   Hygroscopic   Amorphous   Hydrophobic   Hydrophilic   Half-n-half Clue   4. Which of the following gases is green in color?   Krypton   Chlorine   Neon   Hydrogen   Half-n-half Clue   5. Catalysts often speed up certain chemical reactions.   True   False   6. Solubility of a substance in a solvent usually increases with an increase in temperature.   True   False   7. Which of the following is not an acid?   HCl   H2SO4   HNO3   NaOH   Half-n-half Clue