Two solutions having the same osmotic pressure at a given temperature are called:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Isotonic solutions
Osmotic pressure (π) is the extra pressure that must be applied on a solution to stop the flow of solvent into it through a semipermeable membrane; for a dilute solution π = CRT. Of two solutions with different osmotic pressures, the one with the higher value is hypertonic and the one with the lower value is hypotonic.
NCERT (2026-27 edition):
Osmosis and Osmotic Pressure – …
