1. Lemon juice is   Acidic   Neutral   Metallic   Basic   Hint Half-n-half Clue   2. A substance that absorbs moisture is known as   Amorphous   Hygroscopic   Hydrophobic   Hydrophilic   Half-n-half Clue   3. Which of the following is not an allotrope of carbon   Diamond   Graphite   Charcoal   Silk   Half-n-half Clue   4. Which of the following is not a physical change?   Decantation   Distillation   Oxidation   Precipitation   Half-n-half Clue   5. Which of the following gases is green in color?   Chlorine   Neon   Hydrogen   Krypton   Half-n-half Clue   6. Heat is liberated in   Substitution Reactions   Exothermic Reactions   Endothermic Reactions   All chemical reactions   Half-n-half Clue   7. Solubility of a substance in a solvent usually increases with an increase in temperature.   False   True