NCERT Class 7 Science Chapter 13 | Wastewater Story Full Explanation | CBSE 2026

In this video, we explain NCERT Class 7 Science Chapter 13 – Wastewater Story in a simple and easy way.
You will learn:
✔️ What is wastewater?
✔️ What is sewage?
✔️ Sewage Treatment Plant (STP) process
✔️ Sludge and Scum definition
✔️ Aeration process
✔️ Sanitation and hygiene
✔️ Important question answers
This video is helpful for CBSE Class 7 students, exam preparation, revision, and understanding important definitions from Chapter 13.
📚 Chapter Name: Wastewater Story
📖 Subject: Science
🏫 Class: 7 (NCERT/CBSE)
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Видео NCERT Class 7 Science Chapter 13 | Wastewater Story Full Explanation | CBSE 2026 канала Ncert spot