Zeroth law of thermodynamics gives the concept of

Options

A. pressure
B. volume
C. temperature
D. heat

Answer

### Step-by-Step Solution:

1. **Understanding the Zeroth Law of Thermodynamics**: The Zeroth Law of Thermodynamics establishes a fundamental principle regarding thermal equilibrium. It states that if two systems (let's call them A and B) are each in thermal equilibrium with a third system (C), then A and B are also in thermal equilibrium with each other.

2. **Defining Thermal Equilibrium**: Thermal equilibrium occurs when two systems reach the same temperature and there is no net flow of thermal energy between them. This means that they do not exchange heat, and their temperatures are equal.

3. **Implication of the Zeroth Law**: The implication of the Zeroth Law is that temperature can be used as a measure of thermal equilibrium. If two systems are in thermal equilibrium with a third system, they must have the same temperature.

4. **Conclusion**: Therefore, the Zeroth Law of Thermodynamics fundamentally gives us the concept of temperature as a property that determines thermal equilibrium between systems.

### Answer:
The Zeroth Law of Thermodynamics gives the concept of **temperature**.

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