1. Which of the following is not an allotrope of carbon   Graphite   Diamond   Silk   Charcoal   Hint Half-n-half Clue   2. Acids change a litmus paper from   Blue to Red   Red to Purple   Green to White   Red to Blue   Half-n-half Clue   3. The two allotropes of phosphorus are   Rhombic Phosphorus, Monoclinic Phosphorus   Alpha Phosphorus, Beta Phosphorus   Red Phosphorus, Yellow Phosphorus   Crystalline Phosphorus, Amorphous Phosphorus   Half-n-half Clue   4. Which of the following gases is green in color?   Chlorine   Neon   Hydrogen   Krypton   Half-n-half Clue   5. Solubility of a substance in a solvent usually increases with an increase in temperature.   True   False   6. Fill in the missing word Acid + _______ = Salt + Water   Oxygen   Non Metal   Base   Metal   Half-n-half Clue   7. 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