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Q.

Hot concentrated H2SO4 reacts with KMnO4 and forms dangerously explosive,green oily compound (X). (X)

is anhydride of HMnO4. Oxidation state of Mn in (X) is

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a

 +4

b

+6

c

 +3

d

 +7

answer is D.

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Detailed Solution

detailed_solution_thumbnail

2KMnO4 + 2H2SO4→2KHSO4 + Mn2O7 + H2O

X = Mn2O7

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