Q JEE MAIN 2026

Given below are two statements: Statement I: Griss-llosvay test is used for the detection of nitrite ion, which involves the...

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Q JEE MAIN 2026

On heating a mixture of common salt and $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ in equal amount along with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ in...

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Q JEE MAIN 2021

An inorganic Compound ' $X$ ' on treatment with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ produces brown fumes and gives dark brown ring...

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Q JEE MAIN 2021

Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?

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Q JEE MAIN 2021

Given below are two statements : Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous...

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Q JEE MAIN 2022

A white precipitate was formed when $\mathrm{BaCl}_2$ was added to water extract of an inorganic salt. Further, a gas '...

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Q JEE MAIN 2022

Match List I with List II

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Q JEE MAIN 2022

s-block element which cannot be qualitatively confirmed by the flame test is

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Q JEE-Main 2022

During the qualitative analysis of salt with cation $y^{2+}$ addition of a reagent $(X)$ to alkaline solution of the salt...

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Q JEE MAIN 2025

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

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Q JEE MAIN 2023

In the wet tests for detection of various cations by precipitation, Ba2+ cations are detected by obtaining precipitate of

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Q JEE MAIN 2023

A chloride salt solution acidified with dil. $\mathrm{HNO}_3$ gives a curdy white precipitate, $[A]$, on addition of $\mathrm{AgNO}_3$. $[\mathrm{A}]$ on...

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Q JEE-Main_2023

Given below are two statements : Statement I: Upon heating a borax bead dipped in cupric sulphate in a luminous...

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Q JEE MAIN 2023

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

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Q JEE-Main_2023

In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV...

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During the qualitative analysis of $\mathrm{SO}_3^{2-}$ using dilute $\mathrm{H}_2 \mathrm{SO}_4, \mathrm{SO}_2$ gas is evolved which turns $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ solution...

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Q JEE MAIN 2023

During the borax bead test with CuSO4, a blue green colour of the bead was observed in oxidising flame due...

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Q JEE MAIN 2023

Match the List–I with List–II :

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Q JEE MAIN 2023

An ammoniacal metal salt solution gives a brilliant red precipitate on addition of dimethylglyoxime. The metal ion is :

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Q JEE MAIN 2024

On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed ?

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Q JEE MAIN 2024

In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B...

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Q JEE MAIN 2024

Match List I with List II Choose the correct answer from the options given below :

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Q JEE MAIN 2024

Match List I with List-II Choose the correct answer from the option below :

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Q JEE MAIN 2025

Formation of $\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]$, a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate extract of salt...

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Q JEE MAIN 2024

NaCl reacts with conc. $H_2 SO_4$ and $K_2Cr_2O_7$ to give reddish fumes (B), which react with NaOH to give yellow...

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Q JEE MAIN 2025

When a salt is treated with sodium hydroxide solution it gives gas X. On passing gas X through reagent Y...

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${\rm{KMn}}{{\rm{O}}_4}$ acts as an oxidising agent in acidic medium. 'X' is the difference between the oxidation states of Mn in...

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