Statement -1. A compound is formed from its elements only if free energy of formation of the compound is positive .
Statement -2. Many photochemical reactions have positive value for the free energy change.

Options

A. Statement -1 is True, Statement-2 is True, Statement-2 is a correct explanation of 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 given statements, we will evaluate each one based on the principles of thermodynamics, particularly focusing on free energy and spontaneity.

### Step-by-Step Solution:

**Step 1: Evaluate Statement 1**
- **Statement 1:** "A compound is formed from its elements only if the free energy of formation of the compound is positive."
- To determine the validity of this statement, we need to recall that for a reaction to be spontaneous, the change in Gibbs free energy (ΔG) must be negative (ΔG < 0). This means that a compound can form from its elements when the free energy change is negative, indicating that the reaction can proceed without the input of external energy.
- Therefore, the statement is incorrect because it suggests that a positive free energy change is necessary for the formation of a compound, which contradicts the requirement for spontaneity.

**Step 2: Evaluate Statement 2**
- **Statement 2:** "Many photochemical reactions have a positive value for the free energy change."
- Photochemical reactions often require energy input, typically from light (e.g., photons). In such cases, even if the ΔG is positive, the reaction can still occur because the energy from the light provides the necessary activation energy to drive the reaction.
- Thus, this statement is correct. Many photochemical reactions can have a positive free energy change but can still proceed due to the input of energy.

**Conclusion:**
- Statement 1 is false (incorrect), and Statement 2 is true (correct).
- Therefore, the final answer is that Statement 1 is false and Statement 2 is true.

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