For the COD test of sewage, organic matter is oxidised by K 2 Cr 2 0 7 in the presence of Options: A . &nbspH2SO4 B . &nbspHNO3 C . &nbspHCl D . &nbspnone of these

For

Question

For the COD test of sewage, organic matter is oxidised by K₂Cr₂0₇ in the presence of

Options:

A . H2SO4

B . HNO3

C . HCl

D . none of these

Answer: Option A

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