The conductivity of an electrolytic solution does not depend on
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Osmotic pressure
An electrolytic solution conducts electricity through the movement of its ions, so its conductivity depends on everything that changes how many ions there are in unit volume and how fast they move.
Option (1) Osmotic pressure — Not a factor. Osmotic pressure is a colligative property of the solution, a result of the number of solute particles; it plays no part in carrying the current.
Option (2) Concentration of the electrolyte — A factor. On dilution there are fewer ions in unit volume, so the conductivity decreases.
Option (3) The nature of electrolyte — A factor. A strong electrolyte is almost fully ionised and a weak one only slightly; the size of the ions and their solvation also change their mobility.
Option (4) Temperature — A factor. Conductivity increases with temperature, since the viscosity of the solvent falls and the ions move faster.
NCERT (2026-27 edition):
Conductance of Electrolytic Solutions – …
