Assertion : Lipids provide more energy as compared to carbohydrates on oxidation .
Reason : Lipid is the first respiratory substance .

Options

A. (a) If both assertion and Reason are true and the Reason is the correct explanation of the assertion .
B. (b) If both Assertion and Reason ate true , but the reason is not the correct explanation of the assertion .
C. (c) If Assertion is true , but Reason is false
D. (d) if both Assertion and Reason are false.

Answer

To solve the assertion-reason question, we will analyze both the assertion and the reason step by step.

### Step 1: Analyze the Assertion
The assertion states: "Lipids provide more energy as compared to carbohydrates on oxidation."

- **Explanation**: This statement is true. When lipids are oxidized, they release more energy than carbohydrates. This is primarily due to the higher number of hydrogen atoms present in lipids, which can be oxidized to release energy during cellular respiration.

### Step 2: Analyze the Reason
The reason states: "Lipid is the first respiratory substance."

- **Explanation**: This statement is false. The first macromolecule that is typically utilized for energy during respiration is carbohydrates, not lipids. Carbohydrates are more easily digested and metabolized, providing quick energy. Lipids, while they provide more energy per gram, are metabolized more slowly and are not the first source of energy during respiration.

### Step 3: Conclusion
Based on the analysis:
- The assertion is true: Lipids do provide more energy upon oxidation compared to carbohydrates.
- The reason is false: Carbohydrates, not lipids, are the first respiratory substance.

Thus, the correct answer is that the assertion is true, but the reason is false (Option C).

### Final Answer
The correct option is C: Assertion is true, but reason is false.

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