Diatomaceous earth is used in
i) Polishing II) Filtration of oils and syrups III) Production of Antibiotics

Options

A. I,II are correct
B. II,III are correct
C. I ,III are correct
D. I,II,III are correct

Answer

To solve the question regarding the uses of diatomaceous earth, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Diatomaceous Earth**:
- Diatomaceous earth is formed from the fossilized remains of diatoms, which are a type of algae belonging to the kingdom Protista. They have silica-based cell walls, which are very durable.

2. **Analyze the Options**:
- We have three options to consider:
- i) Polishing
- ii) Filtration of oils and syrups
- iii) Production of antibiotics

3. **Evaluate Each Option**:
- **Option i: Polishing**:
- Diatomaceous earth has a gritty texture, making it suitable for use as a polishing agent. This option is correct.
- **Option ii: Filtration of oils and syrups**:
- Due to its porous nature, diatomaceous earth is also effective in filtering liquids, including oils and syrups. This option is correct as well.
- **Option iii: Production of antibiotics**:
- Diatomaceous earth is not used in the production of antibiotics. This option is incorrect.

4. **Conclusion**:
- Based on the evaluation, the correct uses of diatomaceous earth are for polishing and for filtration of oils and syrups. Therefore, the answer to the question is options i and ii.

### Final Answer:
The correct uses of diatomaceous earth are:
- i) Polishing
- ii) Filtration of oils and syrups