1. Solubility of a substance in a solvent usually increases with an increase in temperature.   True   False   2. Fill in the missing word Acid + _______ = Salt + Water   Oxygen   Metal   Non Metal   Base   Hint Half-n-half Clue   3. Acids change a litmus paper from   Green to White   Red to Blue   Red to Purple   Blue to Red   Half-n-half Clue   4. Lemon juice is   Neutral   Basic   Acidic   Metallic   Half-n-half Clue   5. If no more solute can be dissolved in a solvent at a given temperature then that solution is called   A Saturated Solution   An Unstable Solution   A Dispersed Solution   A Real Solution   Half-n-half Clue   6. What gas is evolved when dilute sulphuric acid is added to Zinc?   Hydrogen   Hydrogen Peroxide   Argon   Sulphur Dioxide   Half-n-half Clue   7. A pH of below 7 indicates   Purity of the sample   Acidity   Alkalinity   Presence of Ions   Half-n-half Clue