Question : The manufacturing of iron from iron ore involves the process of

Option 1: oxidation

Option 2: reduction

Option 3: electrolysis

Option 4: fractional distillation

Question : _______ is the process of complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air, light, moisture, or bacterial action that spoils food.

Option 1: Rancidification

Option 2: Hydrogenation

Option 3: Auto-oxidation

Option 4: Auto reduction

Question : Respiration is regarded as a

Option 1: Synthetic Process

Option 2: Catabolic Process

Option 3: Anabolic Process

Option 4: Reduction Process

Question : Activated charcoal is used to remove colouring matter from pure substances by

Option 1: bleaching

Option 2: oxidation

Option 3: adsorption

Option 4: reduction

Question : Fermentation is a type of _______________ process.

Option 1: Anaerobic 

Option 2: Aerobic

Option 3: Oxidation

Option 4: Pasteurisation