MCQ Practice All Subject 📖 একটি 5 day BOD test DO 2.5 mg/L হ্রাস পেল। Sample যদি 100 গুন dilution করা হয়ে থাকে, তাহলে BOD5 = ? ... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up