Answer: Sorbic acid.
- A Oxalic acid
- B Sorbic acid
- C Tartaric acid
- D Sulphuric acid
Correct answer: B. Sorbic acid
Explanation: Salts of sorbic acid and of propanoic acid are widely used food preservatives, along with sodium benzoate, to check microbial spoilage.
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.