Methyl orange is an indicator in acid-alkali titration. It gives

Options

A. Yellow colour in alkaline medium
B. Red colour in acid medium
C. Yellow colour in acid medium
D. Yellow colour in alkaline medium and red colour in acid medium

Explanation

To solve the question regarding the behavior of methyl orange as an indicator in acid-alkali titration, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Methyl Orange**:
- Methyl orange is a pH indicator commonly used in titrations, particularly in acid-base reactions.

2. **Behavior in Acidic Medium**:
- When methyl orange is added to an acidic solution (pH < 3.1), it turns red. This indicates that the solution is acidic.

3. **Behavior in Basic Medium**:
- In a basic solution (pH > 4.4), methyl orange changes color to yellow. This indicates that the solution is basic or alkaline.

4. **Summary of Color Changes**:
- In acidic medium: **Red**
- In basic medium: **Yellow**

5. **Analyzing the Options**:
- The question provides options regarding the colors of methyl orange in different pH conditions. Based on our understanding:
- Red color in acidic medium: **Correct**
- Yellow color in basic medium: **Correct**
- Yellow color in acidic medium: **Incorrect**
- Therefore, the correct option is the one that states "Yellow color in basic medium and red color in acidic medium."

### Final Answer:
The correct statement regarding methyl orange is that it exhibits a red color in acidic medium and a yellow color in basic medium.

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