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3.92 g of ferrous ammonium sulphate crys...

`3.92 g` of ferrous ammonium sulphate crystals are dissolved in `100 ml` of water, `20 ml` of this solution requires `18 ml` of `KMnO_(4)` during titration for complete oxidation. The weight of `KMnO_(4)` present in one litre of the solution is

A

3.476 g

B

12.38 g

C

1.238 g

D

34.76 g

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The correct Answer is:
A
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