1. Lemon juice is   Neutral   Metallic   Acidic   Basic   Hint Dica Meio-a-meio   2. Which of the following is not a physical change?   Decantation   Oxidation   Precipitation   Distillation   Dica Meio-a-meio   3. Which of the following is not an allotrope of carbon   Graphite   Charcoal   Diamond   Silk   Dica Meio-a-meio   4. The two allotropes of phosphorus are   Crystalline Phosphorus, Amorphous Phosphorus   Rhombic Phosphorus, Monoclinic Phosphorus   Alpha Phosphorus, Beta Phosphorus   Red Phosphorus, Yellow Phosphorus   Dica Meio-a-meio   5. Fill in the missing word Acid + _______ = Salt + Water   Base   Metal   Oxygen   Non Metal   Dica Meio-a-meio   6. A substance which speeds up a chemical reaction without itself getting affected is known as a   Cation   Counter Ion   Nucleus   Catalyst   Dica Meio-a-meio   7. The lead of a pencil mainly contains   Carbon Black   Graphite   Plastics   Lead   Dica Meio-a-meio