BOD values (in ppm) for clean water (A) and polluted water (B) are expected respectively 'kw} ty (A) — JEE Mains Chemistry Past Papers Chemistry Question
Question
BOD values (in ppm) for clean water (A) and polluted water (B) are expected respectively 'kw} ty (A) rFkk iznwf"kr ty (B) ds fy, BOD ds izR;kf'kr eku (ppm esa) Øe'k% gSa ^ (A) A > 50, B < 27 (B) A < 5, B > 17 (C) A > 25, B < 17 (D) A > 15, B > 47
Answer: B
💡 Solution & Explanation
Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of 17 ppm or more.
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