Chemistry MCQ Set 3

Question : During the electrolysis of 18gm of acidified water hydrogen released at cathode at S.T.P. is

1. 18 liters
2. 22.4 liters
3. 11.2 liters
4. 1 liter

Question : A loss of electron is also called

1. Oxidation
2. Reduction
3. Electrolysis
4. Valency

Question : Nascent hydrogen is more reactive than molecular hydrogen because its bond energy is

1. 43.5 KJ/mole
2. 435 KJ/mole
3. 4330 KJ/mole
4. 235 KJ/mole

Question : The salt commonly used in cough syrups

1. Sodium carbonate
2. Sodium hydroxide
3. Sodium chloride
4. Ammonium Chloride

Question : The chemicals used for production of CO₂ in the fire extinguisher are

1. NaOH and dill-acid
2. Na₂CO₃ and dill-acid
3. NaHCO₃ and dill-acid
4. CaCO₃ and dill-acid

Question : The filament used in the bulb of lamps on the highway road side which produces yellow glow, is made of

1. Sodium
2. Potassium
3. Rubidium
4. Lithium