![Which of the following are the colloidal materials present in domestic sewage?](https://www.gkseries.com/blog/wp-content/uploads/2022/09/Which-of-the-following-are-the-colloidal-materials-present-in-domestic-sewage.png)
Q. Which of the following are the colloidal materials present in domestic sewage?
- Calcium
- Sand
- Ammonia
- Fecal matter
Answer: Fecal matter
Answer: Fecal matter
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