`Delta"Q"=nCdT` represents

Options

A. Change in amount of heat contained in a body as a result of temperature change
B. Amount of heat energy which transists from one body to other due to temperature difference
C. Both (Change in amount of heat contained in a body as a result of temperature change) and (Amount of heat energy which transits from one dody to other due to temperature difference) are correct
D. None of these

Answer

To solve the question regarding the equation \( \Delta Q = nC dT \), we need to understand what each term in the equation represents and how they relate to heat transfer.

### Step-by-Step Solution:

1. **Identify the Variables**:
- \( \Delta Q \): Represents the change in heat energy.
- \( n \): Represents the number of moles of the substance.
- \( C \): Represents the specific heat capacity of the substance.
- \( dT \): Represents the change in temperature.

2. **Understanding the Equation**:
- The equation \( \Delta Q = nC dT \) describes how much heat energy (\( \Delta Q \)) is absorbed or released by a substance when its temperature changes by \( dT \).
- The product \( nC \) indicates the total heat capacity of the substance, which depends on the amount of substance (in moles) and its specific heat capacity.

3. **Interpretation of Heat Transfer**:
- This equation is used to calculate the heat transfer when a substance undergoes a temperature change. It indicates that the heat transfer is directly proportional to the amount of substance, its specific heat capacity, and the change in temperature.

4. **Choosing the Correct Option**:
- The question asks what \( \Delta Q = nC dT \) represents.
- The correct interpretation is that it represents the amount of heat energy that is transferred due to a temperature change, which aligns with option B: "amount of heat energy which transit from one body to another body due to temperature difference".

### Conclusion:
Thus, the correct answer to the question is option B.