Assertion. Van't Hoff factor for benzoic acid in benzene is less than one.
Reason. Benzoic acid behaves as a weak electrolyte in benzene.

Options

A. If both assertion and reason are true, and reason is the true explanation of the assertion.
B. If both assertion and reason are true, but reason is not the true explanation of the assertion.
C. If assertion is true, but reason is false.
D. If both assertion and reason are false.

Explanation

To solve the question regarding the assertion and reason related to the Van't Hoff factor for benzoic acid in benzene, we can break it down into the following steps:

### Step 1: Understand the Assertion
The assertion states that the Van't Hoff factor (i) for benzoic acid in benzene is less than one. The Van't Hoff factor is a measure of the extent of dissociation or association of solute particles in a solution.

### Step 2: Analyze Benzoic Acid in Benzene
When benzoic acid (C6H5COOH) is dissolved in benzene, it tends to form dimers. This means that two molecules of benzoic acid associate to form a single entity (dimer).

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