Geo-Scientist Prelims 2023 Chemistry Q58: For maintaining thermodynamic equilibrium, a system should be in :

For maintaining thermodynamic equilibrium, a system should be in :

1. (a) Thermal equilibrium and mechanical equilibrium only
2. (b) Thermal equilibrium and chemical equilibrium only
3. (c) Mechanical equilibrium and chemical equilibrium only
4. (d) Thermal, mechanical and chemical equilibrium