1. Fizziness in Coco-Cola/Pepsi is caused by   Nitrogen   Carbon Dioxide   Helium   Hydrogen   Hint Half-n-half Clue   2. A substance which speeds up a chemical reaction without itself getting affected is known as a   Cation   Catalyst   Nucleus   Counter Ion   Half-n-half Clue   3. Which of the following is not a physical change?   Distillation   Oxidation   Decantation   Precipitation   Half-n-half Clue   4. The two allotropes of phosphorus are   Rhombic Phosphorus, Monoclinic Phosphorus   Crystalline Phosphorus, Amorphous Phosphorus   Alpha Phosphorus, Beta Phosphorus   Red Phosphorus, Yellow Phosphorus   Half-n-half Clue   5. Which of the following gases is green in color?   Chlorine   Krypton   Hydrogen   Neon   Half-n-half Clue   6. Which of the following is not an allotrope of carbon   Charcoal   Diamond   Graphite   Silk   Half-n-half Clue   7. Heat is liberated in   Endothermic Reactions   All chemical reactions   Substitution Reactions   Exothermic Reactions   Half-n-half Clue