Substances Present in Natural Water | Useful & Harmful Substances | Class 10 Chemistry New PTB 2026

Substances Present in Water Obtained from Natural Sources | Class 10 Chemistry | New PTB 2026 In this lecture, we will discuss chapter 20 Water (the substances present in water obtained from natural sources) including both useful substances (Dissolved Oxygen) and harmful substances (Harmful Microbes, Heavy metals and their compounds, Plastics, Nitrates and Phosphates) according to the New Punjab Textbook Board (PTB) Chemistry Class 10 (2026 Edition). 📚 In this video you will learn: ✔ What substances are present in natural water? ✔ Useful substances (Dissolved Oxygen) ✔ Harmful substances found in natural water (Harmful Microbes, Heavy metals and their compounds, Plastics, nitrates and phosphates) ✔ Water pollutants and contaminants ✔ Board exam important concepts ✔ MCQs and conceptual questions 🎯 This lecture is specially prepared for: Class 10 Students Punjab Board Students FBISE Students Board Exam Preparation 2026 Chemistry Learners If you find this lecture helpful, don't forget to: 👍 Like the video 💬 Comment your questions 📢 Share with your classmates 🔔 Subscribe to Chem With Sammer for complete Chemistry lectures. #Chemistry #Class10Chemistry #PTB2026 #NaturalWater #Water #UsefulSubstances #HarmfulSubstances #HarmfulMicrobes #HeavyMetalsandtheirCompounds #Plastics #NitratesandPhosphates #PunjabBoard #BoardExam2026 #ChemWithSammer