1. Which of the following is not an acid?   HNO3   NaOH   HCl   H2SO4   Hint Half-n-half Clue   2. Which of the following is a chemical change?   Boiling of water   Freezing of water   Dissolving of salt in water   Rusting of iron   Half-n-half Clue   3. If no more solute can be dissolved in a solvent at a given temperature then that solution is called   A Real Solution   A Saturated Solution   An Unstable Solution   A Dispersed Solution   Half-n-half Clue   4. Which of the following is not a physical change?   Precipitation   Distillation   Decantation   Oxidation   Half-n-half Clue   5. Heat is liberated in   All chemical reactions   Exothermic Reactions   Endothermic Reactions   Substitution Reactions   Half-n-half Clue   6. The two allotropes of phosphorus are   Alpha Phosphorus, Beta Phosphorus   Rhombic Phosphorus, Monoclinic Phosphorus   Crystalline Phosphorus, Amorphous Phosphorus   Red Phosphorus, Yellow Phosphorus   Half-n-half Clue   7. What is the combination of any substance with oxygen known as?   Reduction   Hydrogenation   Combustion   Oxidation   Half-n-half Clue