STATEMENT - 1 : Melting point of fumaric acid is more than maleic acid.
STATEMENT - 2 : Melting point of symmertical moleculare is more than unsymmertical molecule .

Options

A. Statement -1 is true, Statement - 2 is true , Statement -2 is a correct explaination for statement - 1
B. Statement -1 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 solve the question, we will analyze both statements step by step.

### Step 1: Analyze Statement 1
**Statement 1:** Melting point of fumaric acid is more than that of maleic acid.

1. **Structures of Fumaric Acid and Maleic Acid:**
- Fumaric acid (trans isomer) has the following structure:
```
HOOC-CH=CH-COOH
```
- Maleic acid (cis isomer) has the following structure:
```
HOOC-CH=CH-COOH
```

2. **Hydrogen Bonding:**
- Maleic acid exhibits intramolecular hydrogen bonding due to its cis configuration, which allows the hydroxyl groups to be close enough to interact.
- Fumaric acid, on the other hand, exhibits intermolecular hydrogen bonding, which is generally stronger due to the presence of more hydrogen bonds between different molecules.

3. **Comparison of Melting Points:**
- The presence of stronger intermolecular hydrogen bonding in fumaric acid leads to a higher melting point compared to the intramolecular hydrogen bonding in maleic acid.
- Therefore, **Statement 1 is true**: the melting point of fumaric acid is indeed higher than that of maleic acid.

### Step 2: Analyze Statement 2
**Statement 2:** Melting point of symmetrical molecules is more than that of unsymmetrical molecules.

1. **Symmetry and Packing Efficiency:**
- Symmetrical molecules tend to pack more efficiently in a solid state compared to unsymmetrical molecules.
- This efficient packing leads to stronger intermolecular forces (like van der Waals forces) in symmetrical molecules.

2. **Comparison of Melting Points:**
- Due to the higher packing efficiency and stronger intermolecular forces, symmetrical molecules generally have higher melting points than their unsymmetrical counterparts.
- Therefore, **Statement 2 is also true**: the melting point of symmetrical molecules is indeed higher than that of unsymmetrical molecules.

### Step 3: Conclusion
- Both statements are true. However, the reason provided in Statement 2 does not explain the phenomenon described in Statement 1.
- Thus, while both statements are true, Statement 2 is not a correct explanation for Statement 1.

### Final Answer:
- Both Statement 1 and Statement 2 are true, but Statement 2 is not a correct explanation for Statement 1.

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