To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of?

Hydrochloric acid
Sulphuric acid
Nitric acid
Citric acid

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 2

4 views Answered 2022-09-01 13:21

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