Answer: morphine.
- A aspirin
- B morphine
- C paracetamol
- D ibuprofen
Correct answer: B. morphine
Explanation: Morphine is a narcotic (opioid) analgesic; it relieves severe pain but can cause addiction.
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.