MCQ
The correct set of ions (aqueous solution) with same colour from the following is :
- ✓$V ^{2+}, Cr ^{3+}, Mn ^{3+}$
- B$Zn ^{2+}, V ^{3+}, Fe ^{3+}$
- C$Ti ^{4+}, V ^{4+}, Mn ^{2+}$
- D$Sc ^{3+}, Ti ^{3+}, Cr ^{2+}$
✓
Answer
Correct option: A.
$V ^{2+}, Cr ^{3+}, Mn ^{3+}$
(A)
(1) $V ^{2+}$ (Violet), $Cr ^{3+}$ (Violet), $Mn ^{3+}$ (Violet)
(2) $Zn ^{2+}$ (Colourless), $V ^{3+}$ (Green), $Fe ^{3+}$ (Yellow)
(3) $Ti ^{4+}$ (Colourless), $V ^{4+}$ (Blue), $Mn ^{2+}$ (Pink)
(4) $Sc ^{3+}$ (Colourless), $Ti ^{3+}$ (Purple), $Cr ^{2+}$ (Blue)
(1) $V ^{2+}$ (Violet), $Cr ^{3+}$ (Violet), $Mn ^{3+}$ (Violet)
(2) $Zn ^{2+}$ (Colourless), $V ^{3+}$ (Green), $Fe ^{3+}$ (Yellow)
(3) $Ti ^{4+}$ (Colourless), $V ^{4+}$ (Blue), $Mn ^{2+}$ (Pink)
(4) $Sc ^{3+}$ (Colourless), $Ti ^{3+}$ (Purple), $Cr ^{2+}$ (Blue)
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