Read the passage carefully and answer the questions.
Electrochemistry is the study involving two types of processes. One type involves the production of electricity from the energy released during a spontaneous chemical reaction. Galvanic cells like Daniel cells are used to produce electricity from the redox reaction. Nernst equation of a galvanic cell gives the relation between the standard cell potential and the concentration of the species involved in the redox reaction. The second type of study involves the cells in which electrical energy is used to bring about the chemical reactions in a non-spontaneous process. The conductance of electrolytic solution depends on many factors including the nature of the electrolyte and the dimensions of the electrolytic cell.
The conductivity of ionic electrolytic solutions does not depend on:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 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) Concentration of electrolyte. — Conductivity depends on it. The concentration decides the number of ions in a unit volume of the solution.
Option (2) Viscosity of solvent. — Conductivity depends on it. A more viscous solvent slows the ions down.
Option (3) Solvation of ion. — Conductivity depends on it. A heavily solvated ion carries a larger shell of solvent molecules and moves more slowly.
Option (4) Pressure. — Conductivity does not depend on it. Pressure does not change the number or the mobility of the ions in a liquid solution.
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 | – | – | – |