Methyl orange exhibits yellow colour in basic medium.

Answer

To determine whether the statement "Methyl orange exhibits yellow color in basic medium" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Methyl Orange**:
- Methyl orange is a pH indicator commonly used in titrations. It is a weak acid and is represented as \( \text{MEOH} \).

2. **Color Changes of Methyl Orange**:
- Methyl orange changes color based on the pH of the solution. In acidic conditions (pH < 3), it appears red, and in neutral to basic conditions (pH > 4.4), it appears yellow.

3. **Equilibrium Reaction**:
- The equilibrium for methyl orange can be represented as:
\[ \text{MEOH} \rightleftharpoons \text{ME}^+ + \text{OH}^- \]
- Here, \( \text{MEOH} \) (the undissociated form) is yellow, while \( \text{ME}^+ \) (the dissociated form) is red.

4. **Effect of Basic Medium**:
- In a basic medium, the concentration of hydroxide ions (\( \text{OH}^- \)) is high. According to Le Chatelier's principle, the equilibrium will shift to the left to counteract the increase in \( \text{OH}^- \) ions.
- As a result, more \( \text{MEOH} \) is formed, which is yellow in color.

5. **Conclusion**:
- Therefore, in a basic medium, methyl orange indeed exhibits a yellow color. Thus, the statement is **true**.

### Final Answer:
The statement "Methyl orange exhibits yellow color in basic medium" is **True**.

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