The variation equivalent conductance of stronge electrolyte with `sqrt(Concentration)` is correctly shown in the figure.

Options

A.
B.
C.
D.

Explanation

To solve the question regarding the variation of equivalent conductance of a strong electrolyte with the square root of concentration, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship**:
The relationship between equivalent conductance (Λ) and concentration (C) for strong electrolytes is given by the Debye-Hückel equation:
\[ \Lambda = \Lambda_0 - A \sqrt{C} \]
where:
- \( \Lambda \) is the equivalent conductance,
- \( \Lambda_0 \) is the molar equivalent conductance at infinite dilution,
- \( A \) is a constant,
- \( C \) is the concentration.

2. **Rearranging the Equation**:
We can rearrange this equation to express it in a linear form:
\[ \Lambda = -A \sqrt{C} + \Lambda_0 \]
This resembles the equation of a straight line \( y = mx + b \), where:
- \( y \) is equivalent conductance (Λ),
- \( x \) is \( \sqrt{C} \),
- \( m \) (the slope) is \(-A\),
- \( b \) (the y-intercept) is \( \Lambda_0 \).

3. **Identifying the Graph**:
From the equation, we can see that as \( \sqrt{C} \) increases, \( \Lambda \) decreases due to the negative slope. This indicates that the graph will be a straight line with a negative slope.

4. **Choosing the Correct Option**:
Given that the graph of equivalent conductance versus \( \sqrt{C} \) is a straight line with a negative slope, we can conclude that the correct option from the provided choices is the one that represents a line with a negative slope.

### Conclusion:
Thus, the answer to the question is option B, which shows a straight line with a negative slope.

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