Which of the following compound gives red colour with iodine solution ?

Options

A. Starch
B. Glycogen
C. Amylopectin
D. None of the above

Answer

To determine which compound gives a red color with iodine solution, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Reaction of Iodine with Different Compounds**:
- Iodine solution is known to react with various carbohydrates, producing different colors based on the type of carbohydrate present.

2. **Identify the Color Reactions**:
- When iodine solution reacts with **starch**, it produces a **blue color**.
- When iodine solution reacts with **glycogen**, it produces a **red color**.
- When iodine solution reacts with **amylopectin**, it produces a **purple color**.

3. **Determine the Correct Compound**:
- Based on the color reactions identified, the compound that gives a **red color** with iodine solution is **glycogen**.

4. **Conclude the Answer**:
- Therefore, the correct answer to the question is **glycogen**.

### Final Answer:
The compound that gives a red color with iodine solution is **glycogen**.

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