Zeroth Law of Thermodynamics

Q.

A system X is neither in thermal equilibrium with Y, nor with Z. The systems Y and Z -

1. Must be in thermal equilibrium

2. Cannot be in thermal equilibrium

3. May be in thermal equilibrium

4. None of these

Q. Two bodies A, B and bodies B, C are in thermal equilibrium with each other. The temperature of A is ${45}^{\circ }\text{C}$. Then the temperature of C is

1. ${45}^{\circ }\text{C}$
2. $<{45}^{\circ }\text{C}$
3. $>{45}^{\circ }\text{C}$
4. can be any temperature

Q. Zeroth law of thermodynamics gives us the concept of

1. Thermal equilibrium
2. Mechanical equilibrium
3. Chemical equilibrium
4. All of the above.

Q. Two thermally insulated chambers are as shown in figure

Mark the correct option

1. In figure 1, A, B, C are in thermal equilibrium
2. In figure 2, A, B, C are in thermal equilibrium
3. A, B, C is not in thermal equilibrium in any figure
4. In figure 1, A, B, C are in same temperature