1
JEE Main 2023 (Online) 1st February Morning Shift
Numerical
+4
-1
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Sum of oxidation states of bromine in bromic acid and perbromic acid is ___________.

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2
JEE Main 2023 (Online) 31st January Morning Shift
Numerical
+4
-1
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The oxidation state of phosphorus in hypophosphoric acid is + _____________.

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3
JEE Main 2022 (Online) 29th July Evening Shift
Numerical
+4
-1
Change Language

Consider the following sulphur based oxoacids.

$$\mathrm{H}_{2} \mathrm{SO}_{3}, \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{H}_{2} \mathrm{S}_{2} \mathrm{O}_{8}$$ and $$\mathrm{H}_{2}\mathrm{S}_{2} \mathrm{O}_{7}$$.

Amongst these oxoacids, the number of those with peroxo $$(\mathrm{O}-\mathrm{O})$$ bond is ________.

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4
JEE Main 2022 (Online) 28th July Morning Shift
Numerical
+4
-1
Change Language

The disproportionation of $$\mathrm{MnO}_{4}^{2-}$$ in acidic medium resulted in the formation of two manganese compounds $$\mathrm{A}$$ and $$\mathrm{B}$$. If the oxidation state of $$\mathrm{Mn}$$ in $$\mathrm{B}$$ is smaller than that of A, then the spin-only magnetic moment $$(\mu)$$ value of B in BM is __________. (Nearest integer)

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