The d- and f-Block Elements

Bihar Board Class 12 · Chemistry · 31 past questions

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1. Q1 2026 Set A

   If the electronic configuration of a transition element in its +3 oxidation state is [Ar]3d$^4$, then its…

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2. Q3 2025 Set D2022 Set E

   Which of the following ions is diamagnetic ?

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3. Q8 2025 Set D

   Which of the following compounds can be coloured ?

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4. Q9 2024 Set D

   Which of the following has maximum number of unpaired electrons ?

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5. Q12 2023 Set F

   Which of the following ions of transition elements is paramagnetic ?

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6. Q18 2022 Set E

   In which of the following is the oxidation state of Mn lowest ?

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7. Q20 2022 Set E

   Which of the following ions is colourless ?

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8. Q24 2018

   Which of the following has the most stable +2 oxidation state?

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9. Q27 2017

   The highest magnetic moment shown by transition metal ion with the outermost electronic configuration is-

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