NCERT Solutions for Class 7 Science Chapter 18
Important NCERT Questions
7th Chapter 18 Wastewater Story
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 3
Why should oils and fats be not released in the drain? Explain.
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Oil and fats can clog the drains reducing its effectiveness in filtering water. In open drains, they block the pores in the soil and thus hamper the filtration by soil. Hence, oil and fats should not be released in the drain.
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Oils and fats should not be poured down drains because they cause clogs in pipes, leading to drainage problems and costly repairs. When released into sewage systems, they accumulate, causing blockages and environmental pollution. Moreover, they hinder wastewater treatment, affecting water quality and potentially harming the environment. To avoid these issues, it’s best to let oils solidify and dispose of them in the trash or recycle them at designated centers, preventing plumbing issues and protecting the environment from pollution.