In qualitative inorganic analysis of basic radicals hydrochloric acid is preferred to nitric acid for preparing a solution of given substance .This is because :

Options

A. Nitrates are not decomposed to sulphides
B. Nitric acid contain nitrogen
C. Hydrocholoric acid is not an oxidising agent
D. Chlorides are easily converted to sulphides

Explanation

To answer the question regarding why hydrochloric acid is preferred over nitric acid in the qualitative inorganic analysis of basic radicals, we can break down the reasoning step by step.

### Step-by-Step Solution:

1. **Understanding the Role of Acids in Analysis**:
- In qualitative inorganic analysis, acids are used to dissolve salts and prepare solutions for testing the presence of various ions (basic radicals).

2. **Properties of Hydrochloric Acid (HCl)**:
- Hydrochloric acid is a strong acid that does not act as an oxidizing agent. This means it does not have the ability to oxidize other substances in the solution.

3. **Properties of Nitric Acid (HNO3)**:
- Nitric acid is a strong acid but also an oxidizing agent. It can oxidize certain basic radicals (cations) present in the solution, such as Sn²⁺ (tin), Fe²⁺ (iron), and Hg₂²⁺ (mercury).

4. **Impact of Oxidation**:
- When basic radicals are oxidized by nitric acid, they can change into different species, which may not be detectable in the analysis. This can lead to inaccurate results or the loss of important information about the original sample.

5. **Conclusion**:
- Therefore, hydrochloric acid is preferred over nitric acid because it does not oxidize the basic radicals, allowing for accurate qualitative analysis without altering the state of the ions present.

### Final Answer:
Hydrochloric acid is preferred over nitric acid in qualitative inorganic analysis of basic radicals because hydrochloric acid is not an oxidizing agent, whereas nitric acid can oxidize basic radicals, leading to potential inaccuracies in the analysis.

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