State whether the following statements are true or false :
Change of colour in an acid or base depends on the type of indicator used.

Answer

To determine whether the statement "Change of colour in an acid or base depends on the type of indicator used" is true or false, we can analyze the role of indicators in acid-base chemistry.

### Step-by-Step Solution:

1. **Understanding Indicators**: Indicators are substances that change color in response to the acidity or basicity of a solution. They help us determine whether a solution is acidic or basic.

2. **Types of Indicators**: There are various types of indicators, such as litmus, phenolphthalein, turmeric, and china rose. Each of these indicators has a specific color change associated with acidic or basic environments.

3. **Color Change in Acids and Bases**:
- **Litmus Paper**:
- Blue litmus paper turns red in acidic solutions.
- Red litmus paper turns blue in basic solutions.
- **Turmeric**:
- Remains yellow in acidic solutions.
- Turns red in basic solutions.
- **China Rose**:
- Turns light pink or dark magenta in acidic solutions.
- Turns green in basic solutions.

4. **Conclusion**: Since different indicators exhibit different color changes when exposed to acids or bases, the statement that "the change of colour in an acid or base depends on the type of indicator used" is true.

### Final Answer:
The statement is **True**.

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