Chemistry · 2026
JEE Main · 24 January 2026, Shift 1 · Q52
Match the LIST-I with LIST-II Choose the correct answer from the options given below:
Match the LIST-I with LIST-II
Choose the correct answer from the options given below:
| List-I Isothermal process for ideal gas system | List-II Work done $\displaystyle \left(\mathrm{V}_{\mathrm{f}}>\mathrm{V}_{\mathrm{i}}\right)$ | ||
| A. | Reversible expansion | I. | $\displaystyle \mathrm{w}=0$ |
| B. | Free expansion | II. | $\displaystyle \mathrm{w}=-\mathrm{nRT} \ln \frac{\mathrm{V}_{\mathrm{f}}}{\mathrm{V}_{\mathrm{i}}}$ |
| C. | Irreversible expansion | III. | $\displaystyle \mathrm{w}=-\mathrm{p}_{\mathrm{ex}}\left(\mathrm{V}_{\mathrm{f}}-\mathrm{V}_{\mathrm{i}}\right)$ |
| D. | Irreversible compression | IV. | $\displaystyle \mathrm{w}=-\mathrm{p}_{\mathrm{ex}}\left(\mathrm{V}_{\mathrm{i}}-\mathrm{V}_{\mathrm{f}}\right)$ |
Official answer
From NTA’s final answer key for this paper.
(3)
A-II, B-I, C-III, D-IV
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.