Multiple Choice Questions Q1. The removal of Hydrogen from a substance is known as ---- (i) oxidation (ii) dehydration (iii) reduction (iv) crystallisation Q2. The development of unpleasant smell and taste in fat and oil containing foods due to aerial oxidation is ---- (i) acidity (ii) rancidity (iii) displacement (iv) sublimation Q3. In order to obtain a yellow precipitate from Lead Nitrate , you should mix a solution of ---- (i) Potassium Chloride (ii) Potassium Iodide (iii) Potassium Bromide (iv) Potassium Cyanide Q4. In exothermic reactions ---- (i) thermostat is required (ii) energy is released (iii) Energy is absorbed (iv) None of the above Q5. Find a & b in - (i) a = 1, b = 1 (ii) a = 1, b = 2 (iii) a = 3, b = 1 (iv) a = 2, b = 1 Q6. Which gas/gases are released when FeSO 4 is heated? (i) Sulphur Dioxide (ii) Sulphur Trioxide (iii) Both (i) & (ii) (iv) None of these Q7. Which compound is used in black and white photography? (i) Silver Chloride (ii) Sil
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