Sulphuric acid is considered as the king of chemicals. The prosperity of any country is measured by the amount of sulphuric acid it consumes. Sulphuric acid is, thus, a substance of very great commercial importance as it used practically ine every important industry. This is due to the following properties of sulphuric acid :
(a) acidic nature
(b) oxidising nature
(c) dehydrating nature
(d) sulphonation.
Sulphuric acid is used.

Options

A. In lead storage batteries
B. In making fertilizers
C. In making explosives
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Importance of Sulfuric Acid:**
- Sulfuric acid (H₂SO₄) is often referred to as the "king of chemicals" due to its widespread use in various industries. Its consumption is often seen as a measure of a country's industrial activity and economic health.

2. **Identifying the Properties of Sulfuric Acid:**
- Sulfuric acid has several important properties that contribute to its commercial significance:
- **Acidic Nature:** It can donate protons (H⁺ ions) in reactions, making it a strong acid.
- **Oxidizing Nature:** It can act as an oxidizing agent, facilitating various chemical reactions.
- **Dehydrating Nature:** It can remove water from substances, making it useful in dehydration reactions.
- **Sulphonation:** It can introduce sulfonyl groups into organic compounds, which is important in the production of detergents and dyes.

3. **Analyzing the Uses of Sulfuric Acid:**
- The question provides four options regarding the uses of sulfuric acid:
1. In lead storage batteries
2. In making fertilizers
3. In making explosives
4. All of these

4. **Evaluating Each Option:**
- **Option 1: In lead storage batteries** - Correct. Sulfuric acid is used as an electrolyte in lead-acid batteries.
- **Option 2: In making fertilizers** - Correct. It is used to produce phosphoric acid, which is a key ingredient in phosphate fertilizers.
- **Option 3: In making explosives** - Correct. Sulfuric acid can react with metals to produce hydrogen gas, which can lead to explosive reactions.
- **Option 4: All of these** - Since all the previous options are correct, this option is also correct.

5. **Conclusion:**
- Based on the analysis, the correct answer is **Option 4: All of these**. Sulfuric acid is indeed used in lead storage batteries, in making fertilizers, and in making explosives.