The d- and f-Block Elements

CBSE Class 12 · Chemistry · 23 past questions

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1. Q4 2026

   In aqueous solution, $Cr_2O_7^{2-}$ ion converts to which of the following in alkaline medium ?

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2. Q13 2025

   Acidified $KMnO_4$ oxidises sulphite to

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3. Q15 2024

   When MnO2 is fused with KOH in air, it gives…

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4. Q23 2023

   Complete the following equations…

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