Sulphuroous acid turned blue litmus to red. Generally oxides of non - metals are _______in nature.

Options

A. basic
B. acidic
C. neutral
D. reactive

Answer

To solve the question, we need to analyze the information given about sulfurous acid and the general behavior of non-metal oxides.

### Step-by-Step Solution:

1. **Understand the Nature of Sulfurous Acid**:
- Sulfurous acid (H2SO3) is formed from sulfur dioxide (SO2), which is a non-metal oxide.
- When sulfurous acid is added to blue litmus paper, it turns the paper red. This indicates that the solution is acidic.

2. **Identify the General Behavior of Non-Metal Oxides**:
- Non-metal oxides, such as sulfur dioxide (SO2), carbon dioxide (CO2), and nitrogen dioxide (NO2), typically react with water to form acids.
- This means that most non-metal oxides exhibit acidic properties when dissolved in water.

3. **Conclude the Nature of Non-Metal Oxides**:
- Since non-metal oxides generally form acids, we can conclude that they are acidic in nature.

4. **Final Answer**:
- Therefore, the answer to the question is: "Generally, oxides of non-metals are acidic in nature."