Answer: It acts as a preservative, slowing the growth of microorganisms that would otherwise spoil the drink.
- A It is added mainly as a sweetening agent to enhance the overall taste of the beverage as frequently documented
- B It functions as a thickening agent that improves the mouthfeel and texture of the drink in most reference accounts
- C It acts as a preservative, slowing the growth of microorganisms that would otherwise spoil the drink
- D It works as an antioxidant, slowing the gradual discolouration of the metal can lining under normal conditions
Correct answer: C. It acts as a preservative, slowing the growth of microorganisms that would otherwise spoil the drink
Explanation: Sodium benzoate is a common chemical preservative that inhibits the growth of bacteria, yeasts, and moulds, extending the shelf life of foods and beverages.
The hydrophobic hydrocarbon tail of each soap/detergent molecule dissolves into an oily dirt droplet, while the hydrophilic (ionic) head stays in the surrounding water - trapping the grease inside a micelle that rinses away with water.
Concept context
Drugs and how they interact with biological targets, chemicals in food, and cleansing agents (soaps and detergents) - chemistry applied directly to daily life and healthcare.