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QJEE MAIN 2024
Correct order of basic strength of Pyrrole
JEE MainChemistryMedium
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QJEE MAIN 2024
Given below are two statements: Statement (I): A solution of [Ni(H_2 O)_6 ]^(2+) is green in colour. Statement (II): A solution of [Ni(CN)_4 ]^(2-) is...
JEE MainChemistryEasy
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QJEE MAIN 2024
In the following sequence of reaction, the major products B and C respectively are :
JEE MainChemistryMedium
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QJEE MAIN 2024
Consider the following reaction $\mathrm{MnO}_2+\mathrm{KOH}+\mathrm{O}_2 \rightarrow \mathrm{~A}+\mathrm{H}_2 \mathrm{O}$ Product ' $A$ ' in neutral or acidic medium disproportionate to give products ' $B$ ' and...
JEE MainChemistryMedium
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QJEE MAIN 2024
Match List-I with List-II.
JEE MainPhysicsMedium
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QJEE MAINS 2024
Only 2 mL of $\mathrm{KMnO}_4$ solution of unknown molarity is required to reach the end point of a titration of 20 mL of oxalic acid...
JEE MainChemistryEasy
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QJEE MAIN 2024
Methods used for purification of organic compounds are based on :
JEE MainChemistryEasy
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QJEE MAINS 2024
The de-Broglie's wavelength of an electron in the $4^{\text {th }}$ orbit is $\_\_\_\_$ $\pi \mathrm{a}_0 \cdot\left(\mathrm{a}_0=\right.$ Bohr's radius $)$
JEE MainChemistryMedium
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QJEE MAINS 2024
Xg of ethylamine is subjected to reaction with NaNO_2/HCl followed by water; evolved dinitrogen gas which occupied 2.24 L volume at STP. X is $\_\_\_\_$...
JEE MainChemistryMedium
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QJEE MAIN 2024
In case of isoelectronic species the size of F^-,Ne and Na^+is affected by:
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