(A): Iodine displaces bromine from `KBrO_3`
(R): Iodine is strong oxidizing agent than bromine. 

Options

A. Both A & R are true, R is the correct explanation of A
B. Both A & R are true, R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer

To analyze the assertion and reason provided in the question, we will break it down step by step.

### Step 1: Understanding the Assertion
The assertion states that "Iodine displaces bromine from KBrO3." This means that when iodine is added to potassium bromate (KBrO3), it can replace bromine in the compound.

**Hint:** Consider the reactivity series of halogens and their ability to displace one another.

### Step 2: Analyzing the Reaction
When iodine is added to potassium bromate, a reaction occurs where iodine displaces bromine. The balanced chemical reaction can be represented as:
\[ \text{I}_2 + 2 \text{KBrO}_3 \rightarrow 2 \text{KI} + \text{Br}_2 + \text{O}_2 \]
This indicates that iodine can indeed displace bromine from potassium bromate.

**Hint:** Look for the chemical equation to confirm the displacement reaction.

### Step 3: Understanding the Reason
The reason states that "Iodine is a stronger oxidizing agent than bromine." To evaluate this, we need to consider the oxidizing power of halogens.

**Hint:** Recall the general trend in oxidizing power among halogens.

### Step 4: Comparing Oxidizing Powers
In the group of halogens, the oxidizing power decreases down the group. Fluorine is the strongest oxidizing agent, followed by chlorine, bromine, and then iodine. This means that iodine is actually a weaker oxidizing agent compared to bromine.

**Hint:** Remember the factors that influence oxidizing power, such as electronegativity and atomic size.

### Step 5: Conclusion
- The assertion is **true** because iodine does displace bromine from KBrO3.
- The reason is **false** because iodine is not a stronger oxidizing agent than bromine; in fact, it is weaker.

Thus, the correct conclusion is that the assertion is true, but the reason is false.

**Final Answer:** Assertion (A) is true, and Reason (R) is false.