For the COD test of sewage, organic matter is oxidised by K₂Cr₂O₇ in the presence of?

H₂SO₄
HNO₃
HCl
None of these

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 1

4 views Answered 2022-09-01 13:21

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