1.

(A): COD of water is detennined by oxidising the organic matter with acidified (50% H_2SO_4) potassium dichromate solution (R) Greater the COD value of water greater is its pollution

Answer»

Both (A) and (R) are TRUE and (R) is the CORRECT explanation of (A)
Both (A) and (R) are true and (R) is not the correct explanation of (A)
(A) is true but (R) is false
(A) is false but (R) is true

ANSWER :B


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