1
JEE Main 2022 (Online) 26th June Morning Shift
Numerical
+4
-1
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The spin-only magnetic moment value of the most basic oxide of vanadium among V2O3, V2O4 and V2O5 is _____________ B.M. (Nearest integer)

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2
JEE Main 2022 (Online) 24th June Evening Shift
Numerical
+4
-1
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Manganese (VI) has ability to disproportionate in acidic solution. The difference in oxidation states of two ions it forms in acidic solution is ____________.

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3
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
The number of halogen/(s) forming halic (V) acid is ___________.
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4
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
+4
-0
Consider the following reactions :

$$NaCl{\rm{ }} + {\rm{ }}{K_2}C{r_2}{O_7} + \mathop {{H_2}S{O_4}}\limits_{(conc.)} $$$$ \to $$ (A) + side products

(A) + NaOH $$ \to $$ (B) + Side products

$$\left( B \right){\rm{ }} + \mathop {{H_2}S{O_4}}\limits_{(dilute)} + {\rm{ }}{H_2}{O_2}$$ $$ \to $$ (C) + Side products

The sum of the total number of atoms in one molecule each of (A) and (B) and (C) is
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