Answer: out of.
- A into
- B out of
- C around
- D neither into nor out of
Correct answer: B. out of
Explanation: A hypertonic surrounding has higher solute concentration, so water leaves the cell by osmosis and it shrinks.
Adding a non-volatile solute lowers the solvent's vapour pressure at every temperature, which is the root cause behind all four colligative properties: it shifts the freezing point down and the boiling point up.
Concept context
Learn how substances dissolve and form mixtures. Covers concentration terms, colligative properties (boiling point elevation, freezing point depression, osmotic pressure), and ideal vs non-ideal solution behaviour.