| Column-I (Type of process) | Column-II (Feature) |
| a. Isothermal | (iv) Temperature constant |
| b. Isobaric | (ii) Pressure constant |
| c. Isochoric | (i) Volume constant |
| d. Adiabatic | (iii) No heat flow between system and surroundings |
Solution:
Isothermal process has constant temperature (a-iv). Isobaric has constant pressure (b-ii). Isochoric has constant volume (c-i). Adiabatic has no heat flow (d-iii). Matching these gives option D.
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