engineering recuitment BMC Sub Engineer Mock Test 2024 Environmental Engineering Quality and Characteristics of Sewage

यदि किसी औद्योगिक से आने वाले सीवेज का BOD5 200 kg/day है तो इसकी जनसंख्या किसके समकक्ष होगी?

1
200
2
2500
3
3750
4
1000
5
5000
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