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Q.

How many milli grams of  Fe0.9O reacts completely with 10 mL o.1M KMnO4solution in acidic conditions? (Fe=56)

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a

570

b

47

c

534

d

474

answer is B.

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Detailed Solution

Here, 

W=10×0.1×5[0.9×3−2]×66.4=474mg

Hence, the correct option is B.

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