Statement-1: A refrigerator transfers heat from lower temperature to higher temperature.
Statement-2: Heat can be transferred from lower temperature to higher temperature by itself according to first law of thermodynamics.

Options

A. Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1
B. Statement-1 is true, statement-2 is true, statement-2 is NOT a correct explanation for statement-1
C. Statement-1 is true, statement-2 is false
D. Statement-1 is false, statement-2 is true

Answer

To analyze the statements provided in the question, let's break them down step by step.

### Step 1: Understanding Statement 1
**Statement 1:** A refrigerator transfers heat from lower temperature to higher temperature.

- A refrigerator operates on the principle of removing heat from a cold reservoir (lower temperature) and rejecting it to a hot reservoir (higher temperature). This process is essential for cooling the interior of the refrigerator.
- The operation of a refrigerator involves the use of a refrigerant that absorbs heat from the inside (cold space) and releases it outside (hot space).

### Step 2: Understanding Statement 2
**Statement 2:** Heat can be transferred from lower temperature to higher temperature by itself according to the first law of thermodynamics.

- The first law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another. However, it does not imply that heat can spontaneously flow from a colder body to a hotter body without any external work being done.
- In natural processes, heat flows from hot to cold spontaneously. For heat to flow from cold to hot, work must be done on the system (as in the case of a refrigerator).

### Step 3: Conclusion
- **Statement 1 is true:** A refrigerator does transfer heat from a lower temperature to a higher temperature.
- **Statement 2 is false:** Heat cannot be transferred from lower temperature to higher temperature by itself; external work is required.

### Final Answer
- Statement 1 is true, and Statement 2 is false.

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