Titanium dioxide is added in the interior paints for walls of rooms, halls and galleries to give:

Options

A. A whiter 'white'
B. A greener 'green'
C. A redder 'red'
D. Silver-white

Answer

To solve the question regarding the role of titanium dioxide in interior paints, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Identify the Compound**: The question mentions titanium dioxide, which has the chemical formula TiO2.

2. **Understand the Use of Titanium Dioxide**: Titanium dioxide is widely known for its application as a pigment in various industries, particularly in the coating and paint industry.

3. **Determine the Properties of Titanium Dioxide**:
- Titanium dioxide is recognized for its ability to scatter visible light effectively.
- It contributes to the whiteness, brightness, and opacity of paints.

4. **Consider the Options Provided**: The options given are:
- A) a white or white
- B) a green or green
- C) a red or red
- D) silver or white

5. **Analyze the Options**:
- Since titanium dioxide is primarily used to enhance the whiteness and brightness of paints, the most logical choice is option A, which states "a white or white."

6. **Conclusion**: Therefore, titanium dioxide is added to interior paints to give a "whiter white."

### Final Answer:
The correct option is **A) a white or white**.

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