BOD vs COD | UGC NET PDE (Environment) Most Repeated PYQs | UGC NET JRF | UGC NET Paper 1 Sunil Sir
💧 BOD vs COD | UGC NET Environment (PDE) Most Repeated PYQs | One-Shot Class by Sunil Sir 🚀 BOD vs COD UGC NET Paper 1 – PDE (Environment) का सबसे scoring, direct-MCQ और हर attempt में repeat होने वाला topic है। इस One-Shot Environmental Science session में Sunil Sir cover करेंगे— 📘 BOD (Biochemical Oxygen Demand) vs COD (Chemical Oxygen Demand) 📘 Differences, Principle, Definitions & Values 📘 Wastewater Treatment Concepts 📘 Water Pollution Indicators 📘 Most Repeated UGC NET PYQs + Expected MCQs for 2025 📘 Environmental Acts & Water Quality Standards ✨ Ideal for UGC NET / JRF / SET / DSSSB / KVS–NVS / Assistant Professor Exam aspirants। 📚 What You Will Learn in This Class: ⭐ 1. BOD – Biochemical Oxygen Demand (UGC NET Favourite) • Meaning: Required oxygen for microbial decomposition • Measured in 5 days at 20°C • Indicator of biodegradable pollution • High BOD = High pollution • Why rivers & lakes differ in BOD? ⭐ 2. COD – Chemical Oxygen Demand ✔ Oxygen needed to chemically oxidize organic matter ✔ Higher value than BOD ✔ Uses strong oxidizing agents (K₂Cr₂O₇) ✔ Indicator of total organic pollution ⭐ 3. BOD vs COD – Key Differences (Most Asked) Feature BOD COD Meaning Microbial decomposition Chemical oxidation Time 5 days 2–3 hours Value Lower Higher Measures Biodegradable organic load Total organic load Use Sewage treatment Industrial effluent ⭐ 4. Standard BOD/COD Values • Pure water = Zero BOD • Domestic sewage = 200–300 mg/L • Permissible limits (CPCB standards) ⭐ 5. Water Pollution Indicators • DO (Dissolved Oxygen) • Nitrates, phosphates • Coliform bacteria • pH & alkalinity ⭐ 6. Most Repeated UGC NET PYQs ✔ BOD vs COD table-based questions ✔ Correct value identification ✔ Indicator of pollution ✔ Which is higher—BOD or COD? ✔ Assertion–Reason ⭐ 7. Expected MCQs for NET JRF 2025 • Match the following • Statement-based numerical reasoning • BOD/COD measurement techniques • Pollution classification questions 👨🏫 Faculty: Sunil Sir | Environment & Higher Education Expert 🏛️ Platform: Apni University 🌟 Why This Session Is Must-Watch: ✨ BOD–COD से हर NET attempt में 2–3 MCQs ✨ Zero theory confusion – 100% conceptual clarity ✨ Environmental Science + Pollution Control का perfect revision ✨ Includes latest CPCB norms & recent PYQs 💡 Exam Tip: ✔ COD value - BOD value → यह UGC NET का सबसे ज़्यादा पूछा जाने वाला PYQ है 🎯 📲 Join Apni University: 🔔 Daily UGC NET Paper 1 PDE Classes 📲 App: Complete NET Paper 1 + Notes + PYQs 📘 Free PDF | BOD–COD Notes | PYQ Booklet 📥 Download Our App👇 :- https://play.google.com/store/apps/de... 🔴 Our Courses :- 👉 UGC NET Paper 01 Batch - https://apniuniversity.classx.co.in/n... 👉 UGC NET Paper 02 Geography Batch - https://apniuniversity.classx.co.in/n... ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ✦ Join Our Telegram Channels👇 :- 🌍 Geography With Suraj Sir(Asst. Prof) = https://telegram.me/suraj_Sir_Geo ☞ NET JRF Apni University = https://telegram.me/netjrfapniuniversity ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👨🏻🎓WhatsApp Channel :- https://whatsapp.com/channel/0029VbBF... ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👍 Visit our Instagram = / apniuniversity22 👍 Facebook Page - / apniuniversity22 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ✤ Subscribe to Our Channels👇 :- 👍 / @apniuniversity 📧 [email protected] BOD vs COD UGC NET, UGC NET PDE Environment, Water pollution indicators, BOD COD difference, Sunil Sir UGC NET, Environment PYQs NET, Apni University NET, BOD, COD, Water Pollution, Environment, UGC NET, Sunil Sir, PYQs, NET JRF, Apni University 🔈 Special Session ▶️ How to Prepare for PhD after PG - • PhD का सुनहरा अवसर| PG के बाद PhD Program|... ▶️ Top 10 Universities for PhD - • Best University for PhD | Top 10 Best PhD ... ▶️ PhD in Rajasthan - • MLSU PHD ADMISSION 2024 | RET 2024 | MLSU ... ▶️ UGC NET History Syllabus - • UGCNET Syllabus 2024 Paper-2 | UGC NET His... ▶️ How to get 80+ marks in NET Exam ▶️ How to attempt NET Paper - • How to Attempt UGC NET June 2024 Exam? Tip... ▶️ Earn fellowship without NET - • Good News😍| Earn Fellowship Without NET/JR... ▶️ SET 2024 Notification Out - • SET 2024 NOTIFICATION OUT l HP SET Exam Pa... ▶️ Target UGC NET June Exam - • UGC NET June 2024 🎯 | UGC NET Preparation ... ▶️ UGC NET Preparation Strategy - • UGC NET June 2024 🎯 | UGC NET Preparation ... ▶️ NET Success Story - • UGC NET 2023 Result 🤩 UGC NET Success Stor... ▶️ UGC NET Paper 01 or Paper 02 - • UGCNET Paper 1 या Paper 2🤔 पहले तैयारी कैस... BOD vs COD UGC NET, UGC NET PDE Environment, Water pollution indicators, BOD COD difference, Sunil Sir UGC NET, Environment PYQs NET, Apni University NET, BOD, COD, Water Pollution, Environment, UGC NET, Sunil Sir, PYQs, NET JRF, Apni University #BODvsCOD #UGCNET #Environment #PDE #SunilSir #NETJRF #WaterPollution #ApniUniversity