Environment & Ecology · Environmental Science
अपशिष्ट जल के एक नमूने का रासायनिक ऑक्सीजन मांग (COD) आम तौर पर उसके जैव रासायनिक ऑक्सीजन मांग (BOD) से कितने गुना अधिक होता है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1बराबर
- 25–7 गुना
- 31.5–2.5 गुना✓
- 40.5 गुना
सही उत्तर देखें
1.5–2.5 गुना
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