The conductivity of electrolytic solutions does not depend upon
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Pressure
An electrolytic solution conducts electricity by the movement of ions, so its conductivity depends on what changes the number of ions or how freely they move. Pressure hardly changes the volume of a liquid, so it has no effect on the conductivity of a solution.
Option (1) Nature of the electrolyte added — Conductivity depends on it. A strong electrolyte such as KCl is almost fully ionised and conducts far better than a weak one such as acetic acid at the same concentration.
Option (2) Nature of solvent and its viscosity — Conductivity depends on it. A more viscous solvent slows the ions down, and a solvent of high dielectric constant favours ionisation.
Option (3) Pressure — Conductivity does not depend on it. Pressure does not change the number or the mobility of the ions in a liquid solution.
Option (4) Temperature — Conductivity depends on it. On heating, the viscosity falls and the ions move faster, so the conductivity increases.
NCERT (2026-27 edition):
Conductance of Electrolytic Solutions – …
Note: The same/similar question has been asked in different years by NTA as per the details given below:
| 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|
| – | 23-05 S2 15-05 S2 | – | – | – |