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d and f Block Elements

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Q JEE MAIN 2023
Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state changes from
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$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ paper acidified with dilute $\mathrm{H}_2 \mathrm{SO}_4$ turns green when exposed to
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Q JEE MAIN 2023
Which one amongst the following are good oxidizing agents?

Choose the most appropriate...
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Q JEE MAIN 2023
The pair of lanthanides in which both elements have high third -ionization energy is:
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Q JEE MAIN 2023
CIF5 at room temperature is a:
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Q JEE MAIN 2023
In the extraction process of copper, the product obtained after carrying out the reactions
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The mismatched combinations are A. Chlorophyll - Co B. Water hardness - EDTA C. Photography - $[\mathrm{Ag}(\mathrm{CN}) 2]^{-}$ D. Wilkinson catalyst $...
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Q JEE MAIN 2023
Which halogen is known to cause the reaction given below: $2 \mathrm{Cu}^{2+}+4 \mathrm{X}^{-} \rightarrow \mathrm{Cu}_2 \mathrm{X}_2(\mathrm{~s})+\mathrm{X}_k$
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When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic medium, a dark brown ring was formed...
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Q JEE MAIN 2023
Which of the following statements are correct?
(A) The $\mathrm{M}^{3+} / \mathrm{M}^{2+}$ reduction potential for iron is greater than manganese
(B) The higher...
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