Compounds of transition elements
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CHXII08:THE D- & F-BLOCK ELEMENTS

321327 Alkaline oxidative fusion of \({\mathrm{\mathrm{MnO}_{2}}}\) gives " \({\mathrm{A}}\) " which on electrolytic oxidation in alkaline solution produces B. A and B respectively are

1 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{3}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\)
3 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321328 Potassium manganate is formed when :

1 \(\mathrm{\mathrm{Cl}_{2}}\) is passed into an aqueous solutions of \(\mathrm{\mathrm{KMnO}_{4}}\)
2 \(\mathrm{\mathrm{MnO}_{2}}\) is fused with \(\mathrm{\mathrm{KOH}}\) in air
3 Formaldehyde reacts with \(\mathrm{\mathrm{KMnO}_{4}}\) in presence of strong alkalli
4 \(\mathrm{\mathrm{KMnO}_{4}}\) reacts with concentrated \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321329 When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

1 \(\mathrm{\mathrm{K}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{3}}\)
3 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{4}}\)
4 \(\mathrm{\mathrm{KMnO}_{4}}\)
MHTCET - 2019
CHXII08:THE D- & F-BLOCK ELEMENTS

321330 Potassium permanganate acts as an oxidant in neutral, alkaline as well as in acidic media. The final products obtained from it in the three conditions are, respectively

1 \(\mathrm{MnO}_{2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{2+}\)
2 \(\mathrm{MnO}_{4}^{2-}, \mathrm{Mn}^{3+}, \mathrm{Mn}^{2+}\)
3 \(\mathrm{MnO}_{4}^{-2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{+2}\)
4 \(\mathrm{MnO}, \mathrm{MnO}_{4}^{-}, \mathrm{Mn}^{2+}\)
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CHXII08:THE D- & F-BLOCK ELEMENTS

321327 Alkaline oxidative fusion of \({\mathrm{\mathrm{MnO}_{2}}}\) gives " \({\mathrm{A}}\) " which on electrolytic oxidation in alkaline solution produces B. A and B respectively are

1 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{3}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\)
3 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321328 Potassium manganate is formed when :

1 \(\mathrm{\mathrm{Cl}_{2}}\) is passed into an aqueous solutions of \(\mathrm{\mathrm{KMnO}_{4}}\)
2 \(\mathrm{\mathrm{MnO}_{2}}\) is fused with \(\mathrm{\mathrm{KOH}}\) in air
3 Formaldehyde reacts with \(\mathrm{\mathrm{KMnO}_{4}}\) in presence of strong alkalli
4 \(\mathrm{\mathrm{KMnO}_{4}}\) reacts with concentrated \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321329 When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

1 \(\mathrm{\mathrm{K}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{3}}\)
3 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{4}}\)
4 \(\mathrm{\mathrm{KMnO}_{4}}\)
MHTCET - 2019
CHXII08:THE D- & F-BLOCK ELEMENTS

321330 Potassium permanganate acts as an oxidant in neutral, alkaline as well as in acidic media. The final products obtained from it in the three conditions are, respectively

1 \(\mathrm{MnO}_{2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{2+}\)
2 \(\mathrm{MnO}_{4}^{2-}, \mathrm{Mn}^{3+}, \mathrm{Mn}^{2+}\)
3 \(\mathrm{MnO}_{4}^{-2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{+2}\)
4 \(\mathrm{MnO}, \mathrm{MnO}_{4}^{-}, \mathrm{Mn}^{2+}\)
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CHXII08:THE D- & F-BLOCK ELEMENTS

321327 Alkaline oxidative fusion of \({\mathrm{\mathrm{MnO}_{2}}}\) gives " \({\mathrm{A}}\) " which on electrolytic oxidation in alkaline solution produces B. A and B respectively are

1 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{3}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\)
3 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321328 Potassium manganate is formed when :

1 \(\mathrm{\mathrm{Cl}_{2}}\) is passed into an aqueous solutions of \(\mathrm{\mathrm{KMnO}_{4}}\)
2 \(\mathrm{\mathrm{MnO}_{2}}\) is fused with \(\mathrm{\mathrm{KOH}}\) in air
3 Formaldehyde reacts with \(\mathrm{\mathrm{KMnO}_{4}}\) in presence of strong alkalli
4 \(\mathrm{\mathrm{KMnO}_{4}}\) reacts with concentrated \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321329 When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

1 \(\mathrm{\mathrm{K}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{3}}\)
3 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{4}}\)
4 \(\mathrm{\mathrm{KMnO}_{4}}\)
MHTCET - 2019
CHXII08:THE D- & F-BLOCK ELEMENTS

321330 Potassium permanganate acts as an oxidant in neutral, alkaline as well as in acidic media. The final products obtained from it in the three conditions are, respectively

1 \(\mathrm{MnO}_{2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{2+}\)
2 \(\mathrm{MnO}_{4}^{2-}, \mathrm{Mn}^{3+}, \mathrm{Mn}^{2+}\)
3 \(\mathrm{MnO}_{4}^{-2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{+2}\)
4 \(\mathrm{MnO}, \mathrm{MnO}_{4}^{-}, \mathrm{Mn}^{2+}\)
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CHXII08:THE D- & F-BLOCK ELEMENTS

321327 Alkaline oxidative fusion of \({\mathrm{\mathrm{MnO}_{2}}}\) gives " \({\mathrm{A}}\) " which on electrolytic oxidation in alkaline solution produces B. A and B respectively are

1 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\)
2 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{3}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\)
3 \({\mathrm{\mathrm{MnO}_{4}^{2-}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
4 \({\mathrm{\mathrm{Mn}_{2} \mathrm{O}_{7}}}\) and \({\mathrm{\mathrm{MnO}_{4}^{-}}}\)
JEE Main - 2024
CHXII08:THE D- & F-BLOCK ELEMENTS

321328 Potassium manganate is formed when :

1 \(\mathrm{\mathrm{Cl}_{2}}\) is passed into an aqueous solutions of \(\mathrm{\mathrm{KMnO}_{4}}\)
2 \(\mathrm{\mathrm{MnO}_{2}}\) is fused with \(\mathrm{\mathrm{KOH}}\) in air
3 Formaldehyde reacts with \(\mathrm{\mathrm{KMnO}_{4}}\) in presence of strong alkalli
4 \(\mathrm{\mathrm{KMnO}_{4}}\) reacts with concentrated \(\mathrm{\mathrm{H}_{2} \mathrm{SO}_{4}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321329 When a mixture of manganese dioxide, potassium hydroxide and potassium chlorate is fused, the product obtained is

1 \(\mathrm{\mathrm{K}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{3}}\)
3 \(\mathrm{\mathrm{K}_{2} \mathrm{MnO}_{4}}\)
4 \(\mathrm{\mathrm{KMnO}_{4}}\)
MHTCET - 2019
CHXII08:THE D- & F-BLOCK ELEMENTS

321330 Potassium permanganate acts as an oxidant in neutral, alkaline as well as in acidic media. The final products obtained from it in the three conditions are, respectively

1 \(\mathrm{MnO}_{2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{2+}\)
2 \(\mathrm{MnO}_{4}^{2-}, \mathrm{Mn}^{3+}, \mathrm{Mn}^{2+}\)
3 \(\mathrm{MnO}_{4}^{-2}, \mathrm{MnO}_{2}, \mathrm{Mn}^{+2}\)
4 \(\mathrm{MnO}, \mathrm{MnO}_{4}^{-}, \mathrm{Mn}^{2+}\)