When $MnO_2$ is fused with $KOH$ in the presence of air,a colored compound is formed. Identify the compound and its color.
- A$K_2MnO_4$,Green
- B$KMnO_4$,Purple
- C$Mn_2O_3$,Brown
- D$Mn_3O_4$,Black
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Assertion : Coloured cations can be identified by borax bead test.
Reason : Transparent bead $(NaBO_2 + B_2O_3)$ forms coloured bead with coloured cation.
Reason : Transparent bead $(NaBO_2 + B_2O_3)$ forms coloured bead with coloured cation.
MediumAIIMS 2009
View SolutionThe color of acidified $K_2Cr_2O_7$ is not changed by:
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View SolutionThe transition metal which forms a green compound in $+3$ oxidation state and a yellow-orange compound in $+6$ oxidation state is
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View SolutionThe products $A$ and $B$ formed in the following reactions are:
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$CrO_2Cl_2 + 4NaOH \rightarrow A + 2NaCl + 2H_2O$
$A + 2HCl + 2H_2O_2 \rightarrow B + 3H_2O$
DifficultJEE MAIN 2024
View SolutionFill in the blanks:
$(a)$ The unit of magnetic moment is ......... .
$(b)$ $Mn^{2+}$ has .......... color.
$(c)$ $Fe_3H$ is a ............. type of compound.
$(a)$ The unit of magnetic moment is ......... .
$(b)$ $Mn^{2+}$ has .......... color.
$(c)$ $Fe_3H$ is a ............. type of compound.
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