Answer: Morphine.
- A Aspirin
- B Paracetamol
- C Morphine
- D Ranitidine
Correct answer: C. Morphine
Explanation: Morphine is a narcotic analgesic derived from opium, used to relieve severe pain and as a surgical anaesthetic, but carries addiction risk.
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.