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d and f Block Elements

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Q JEE MAIN 2021
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The major components in "Gun Metal" are :
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Match List-I with List-II :
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Given below are two statement: one is labelled as Assertion A and the other is labelled as Reason R ;
Assertion A ; Size of...
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Ellingham diagram is a graphical representation of:
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Given below are two statements:
Statement I: $\mathrm{CeO}_2$ can be used for oxidation of aldehydes and ketones.
Statement 11 : Aqueous solution of...
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Q JEE MAIN 2022
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are
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The total number of $\mathrm{Mn}=\mathrm{O}$ bonds in $\mathrm{Mn}_2 \mathrm{O}_7$ is $\_\_\_\_$
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Given below are two statements:
Statement I : Iron (III) catalyst, acidified $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ and neutral $\mathrm{KMnO}_4$ have the ability to oxidise I to$\mathrm{l}_2$...
JEE Main Chemistry Medium
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Among $\mathrm{Co}^{3+}, \mathrm{Ti}^{2+}, \mathrm{V}^{2+}$ and $\mathrm{Cr}^{2+}$ ions, one if used as a reagent cannot liberate $\mathrm{H}_2$ from dilute mineral acid solution, its spin-only magnetic moment...
JEE Main Physics Hard
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