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COD of a water sample is 8ppm the weight...

COD of a water sample is 8ppm the weight of acidified `K_(2)Cr_(2) O_(7)` required to oxidise the organie matter present in one litre of water sample is

A

98 mg

B

49 mg

C

196 mg

D

98 g

Text Solution

Verified by Experts

The correct Answer is:
B
`C.O.D = (Wt. of O_2)/("Wt. of sample of water") xx 10^6`
on solving 49 mg
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