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d and f Block Elements

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Q JEE MAIN_2026
Consider the following reactions. $\mathrm{PbCl}_2+\mathrm{K}_2 \mathrm{CrO}_4 \rightarrow \mathrm{~A}+2 \mathrm{KCl}$ (Hot solution) $$ \begin{aligned} & \mathrm{A}+\mathrm{NaOH} \rightleftharpoons \mathrm{~B}+\mathrm{Na}_2 \mathrm{CrO}_4 \\ & \mathrm{PbSO}_4+4 \mathrm{CH}_3 \mathrm{COONH}_4 \rightarrow\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4+\mathrm{X}...
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Q JEE Advanced 2025
The pair(s) of diamagnetic ions is(are)
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Q JEE Advanced 2025
One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is
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Q JEE MAIN 2019
An example of a disproportionation reaction is
JEE Main Chemistry Medium
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Q JEE MAIN 2020
The oxidation states of transition metal atoms in $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7, \mathrm{KMnO}_4$ and $\mathrm{K}_2 \mathrm{FeO}_4$, respectively, are $\mathrm{x}, \mathrm{y}$ and z . The sum of...
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Q JEE MAIN 2019
Thermal decomposition of a Mn compound $(\mathrm{X})$ at 513 K results in compound $\mathrm{Y}, \mathrm{MnO}_2$ and a gaseous product. $\mathrm{MnO}_2$ reacts with NaCl and concentrated...
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Q JEE MAIN 2019
Good reducing nature of $\mathrm{H}_3 \mathrm{PO}_2$ is attributed to the presence of:
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Q JEE MAIN 2019
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Q JEE MAIN_2019_
The alloy used in the construction of aircrafts is :
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Q JEE MAIN_2019
Consider the hydrated ions of $\mathrm{Ti}^{2+}, \mathrm{V}^{2+}, \mathrm{Ti}^{3+}$, and $\mathrm{Sc}^{3+}$. The correct order of their spin-only magnetic moments is i.
JEE Main Chemistry Easy
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