A : The oxidation number of S is +6 in `H_(2)SO_(4)`.
R : `H_(2)SO_(4)` has one peroxide linkage.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4).

Answer

To solve the question regarding the assertion and reason statements about the oxidation number of sulfur in sulfuric acid (H₂SO₄) and the presence of a peroxide linkage, we will follow these steps:

### Step 1: Analyze the Assertion
The assertion states that the oxidation number of sulfur (S) in H₂SO₄ is +6.

1. **Identify the oxidation states of the other elements:**
- Hydrogen (H) typically has an oxidation state of +1.
- Oxygen (O) typically has an oxidation state of -2.

2. **Set up the equation for the oxidation number of sulfur:**
Let the oxidation number of sulfur be \( x \).
The formula for H₂SO₄ can be expressed as:
\[ 2(+1) + x + 4(-2) = 0 \]
Simplifying this gives:
\[ 2 + x - 8 = 0 \]
\[ x - 6 = 0 \implies x = +6 \]

3. **Conclusion for the assertion:**
The oxidation number of sulfur in H₂SO₄ is indeed +6, confirming that the assertion is true.

### Step 2: Analyze the Reason
The reason states that H₂SO₄ has one peroxide linkage.

1. **Understand what a peroxide linkage is:**
A peroxide linkage refers to the presence of an -O-O- bond between two oxygen atoms.

2. **Draw the structure of H₂SO₄:**
The structure of sulfuric acid is:
\[ \text{H}_2\text{SO}_4: \quad \text{O}=\text{S}(\text{O}^-\text{H})_2 + \text{O}=\text{O} \]
In this structure, there are double bonds between sulfur and two oxygen atoms, and single bonds to hydroxyl groups (-OH). There is no -O-O- bond present.

3. **Conclusion for the reason:**
Since there is no peroxide linkage in H₂SO₄, the reason is false.

### Final Conclusion
- The assertion is true (oxidation number of S is +6).
- The reason is false (H₂SO₄ does not have a peroxide linkage).

Thus, the correct answer is that the assertion is true and the reason is false.