MCQ
For the process to occur under adiabatic conditions, the correct condition is:
- A
- B
- C
- D
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|
Bottom Layer |
Middle Layer |
Upper Layer |

| System $A$ | System $B$ |
| Temprature rise | Temprature remains same |
$PH _{3}, B _{2} H _{6}, CCl _{4}, NH _{3}, LiH$ and $BCl _{3}$ is ..... .