State the number of significant figures in each of the following :

Options

A. 0.0037
B. 0.00601
C. 1.0001
D. 0.00236

Answer

To determine the number of significant figures in each of the given numbers, we will apply the rules of significant figures systematically. Here’s the step-by-step solution:

### Step 1: Identify the Number of Significant Figures

1. **Number: 0.0037**
- Non-zero digits (3 and 7) are significant.
- Leading zeros (0.00) are not significant.
- **Significant Figures: 2**

2. **Number: 0.00601**
- Non-zero digits (6 and 1) are significant.
- Leading zeros (0.00) are not significant.
- The zero between 6 and 1 is significant (Rule 2).
- **Significant Figures: 3**

3. **Number: 1.0001**
- Non-zero digits (1, 1) are significant.
- The zeros between the non-zero digits (000) are significant (Rule 2).
- **Significant Figures: 5**

4. **Number: 0.00236**
- Non-zero digits (2, 3, and 6) are significant.
- Leading zeros (0.00) are not significant.
- **Significant Figures: 3**

### Summary of Significant Figures
- For **0.0037**: 2 significant figures
- For **0.00601**: 3 significant figures
- For **1.0001**: 5 significant figures
- For **0.00236**: 3 significant figures

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