The heat required to raise the temperature of a body by `1^(@)C` is called

Options

A. (a)Specific heat
B. (b)Molar heat capacity
C. (c)Enthalpy
D. (d)Internal energy

Answer

To solve the question "The heat required to raise the temperature of a body by `1^(@)C` is called," we need to analyze the definitions of the terms related to heat capacity.

### Step-by-Step Solution:

1. **Understanding Heat Capacity**:
- Heat capacity is a general term that refers to the amount of heat required to change the temperature of a given quantity of a substance by one degree Celsius (or one Kelvin).

2. **Specific Heat Capacity**:
- Specific heat capacity is defined as the heat required to raise the temperature of one gram of a substance by one degree Celsius. It is a more specific term as it relates to a particular mass of the substance.

3. **Molar Heat Capacity**:
- Molar heat capacity is the heat required to raise the temperature of one mole of a substance by one degree Celsius. Like specific heat capacity, it is also a specific term but relates to a mole of the substance rather than a gram.

4. **Thermal Capacity**:
- Thermal capacity (or simply heat capacity) is the most general term that encompasses both specific heat capacity and molar heat capacity. It refers to the total heat required to raise the temperature of any amount of substance by one degree Celsius.

5. **Conclusion**:
- Since the question does not specify whether it is referring to a gram or a mole of a substance, the most appropriate answer is "thermal capacity."

### Final Answer:
The heat required to raise the temperature of a body by `1^(@)C` is called **thermal capacity**.