Q JEE MAIN 2026

500 mL of $0.2 \mathrm{M} \mathrm{MnO}_4^{-}$solution in basic medium when mixed with 500 mL of 1.5 M KI solution, oxidises...

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Q JEE MAIN_2026

Consider the following data. $\mathrm{BaSO}_4$ is sparingly soluble in water. If the conductivity of the saturated $\mathrm{BaSO}_4$ solution is $...

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Q JEE MAIN_2026

Given below are two statements: Statement I: Sodium dichromate and potassium dichromate are classified as primary standards in titrimetric analysis....

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Q JEE MAIN_2026

In order to oxidise a mixture of 1 mole each of $\mathrm{FeC}_2 \mathrm{O}_4, \mathrm{Fe}_2\left(\mathrm{C}_2 \mathrm{O}_4\right)_3, \mathrm{FeSO}_4$ and $\mathrm{Fe}_2\left(\mathrm{SO}_4\right)_3$ in acidic...

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Q JEE MAIN 2026

500 mL of 1.2 M KI solution is mixed with 500 mL of $0.2 \mathrm{MKMnO}_4$ solution in basic medium. The...

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Q JEE MAIN 2026

Aqueous HCl reacts with $\mathrm{MnO}_2(\mathrm{~s})$ to form $\mathrm{MnCl}_2(\mathrm{aq}), \mathrm{Cl}_2(\mathrm{~g})$ and $\mathrm{H}_2 \mathrm{O}(l)$. What is the weight (in g ) of...

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Q JEE MAIN 2019

The decreasing order of electrical conductivity of the following aqueous solutions is: 0.1 M Formic acid (A), 0.1 M Acetic...

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Q JEE-MAIN 2020

The volume, in mL , of $0.02 \mathrm{M} \mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ solution required to react with 0.288 g of ferrous...

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Q JEE MAIN 2020

A 20.0 mL solution containing 0.2 g impure $\mathrm{H}_2 \mathrm{O}_2$ reacts completely with 0.316 g of $\mathrm{KMnO}_4$ in acid solution....

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Q JEE MAIN 2020

A 100 mL solution was made by adding 1.43 g of $\mathrm{Na}_2 \mathrm{CO}_3 \cdot \mathrm{xH}_2 \mathrm{O}$. The normality of the...

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Q JEE-MAIN 2020

The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M), respectively,...

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Q JEE MAIN 2019

The layer of atmosphere between 10 km to 50 km above the sea level is called as

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Q JEE MAIN 2021

When 10 mL of an aqueous solution of $\mathrm{KMnO}_4$ was titrated in acidic medium, equal volume of 0.1 M of...

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Q JEE MAIN_2021_

10.0 mL of $0.05 \mathrm{M} \mathrm{KMnO}_4$ solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate...

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Q JEE MAIN 2021

When 10 mL of an aqueous solution of $\mathrm{Fe}^{2+}$ ions was titrated in the presence of dil $\mathrm{H}_2 \mathrm{SO}_4$ using...

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Q JEE MAIN 2019

Calculate the standard cell potential (in V) of the cell in which following reaction takes place : $$ \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Ag}^{+}(\mathrm{aq}) \rightarrow...

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Q JEE MAIN 2019

The strength of 11.2 volume solution of $\mathrm{H}_2 \mathrm{O}_2$ is [Given that molar mass of $\mathrm{H}=1 \mathrm{~g} \mathrm{~mol}^{-1}$ and $...

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Q JEE MAIN 2021

10.0 ml of $\mathrm{Na}_2 \mathrm{CO}_3$ solution is titrated against 0.2 M HCI solution. The following titre values were obtained in...

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Q JEE-Main-2021

15 mL of aqueous solution of $\mathrm{Fe}^{2+}$ in acidic medium completely reacted with 20 mL of 0.03 M aqueous $...

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Q JEE MAIN 2021

In basic medium $\mathrm{CrO}_4^{2-}$ oxidises $\mathrm{S}_2 \mathrm{O}_3^{2-}$ to form $\mathrm{SO}_4^{2-}$ and itself changes into $\mathrm{Cr}(\mathrm{OH})_4^{-}$. The volume of 0.154 M...

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Q JEE MAIN 2022

20 mL of $0.02 \mathrm{M} \mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ solution is used for the titration of 10 mL of $\mathrm{Fe}^{2+}$ solution...

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Q JEE MAIN 2022

The disproportionation of $\mathrm{MnO}_4^{2-}$ in acidic medium resulted in the formation of two manganese compounds A and B . If...

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Q JEE MAIN 2022

In base vs. Acid titration, at the end point methyl orange is present as

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Q JEE MAIN 2022

The normality of $\mathrm{H}_2 \mathrm{SO}_4$ in the solution obtained on mixing 100 mL of $0.1 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$ with 50...

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Q JEE MAIN 2022

In neutral or faintly alkaline medium, $\mathrm{KMnO}_4$ being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this...

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Q JEE MAIN 2022

Given below are two statements : One is labeled as Assertion A and the other is labeled as Reason R...

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Q JEE MAIN 2022

Which of the given reactions is not an example of disproportionation reaction ?

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Q JEE MAIN 2022

0.01 M KMnO4 solution was added to 20.0 mL of 0.05 M Mohr’s salt solution through a burette. The initial...

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Q JEE-Main 2022

Some gases are responsible for heating of atmosphere (green house effect). Identify from the following the gaseous species which does...

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Q JEE-Main 2022

A 0.166 g sample of an organic compound was digested with cone. $\mathrm{H}_2 \mathrm{SO}_4$ and then distilled with NaOH ....

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Q JEE MAIN 2022

A 2.0 g sample containing $\mathrm{MnO}_2$ is treated with HCl liberating $\mathrm{Cl}_2$. The $\mathrm{Cl}_2$.gas is passed into a solution of...

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Q JEE MAIN 2019

If 50 mL of 0.5 M oxalic acid is required to neutralise 25 mL of NaOH solution, the amount of...

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Q JEE MAIN 2025

Compounds that should not be used as primary standards in titrimetric analysis are : A. $\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7$ B. Oxalic...

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Q JEE MAIN 2023

In alkaline medium, the reduction of permanganate anion involves a gain of _______ electrons.

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Q JEE MAIN 2023

The volume of 0.02 M aqueous HBr required to neutralize 10.0 mL of 0.01 M aqueous $\mathrm{Ba}(\mathrm{OH})_2$ is (Assume complete...

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Q JEE MAIN 2023

An analyst wants to convert. 1L HCI of pH = 1 to a solution of HCI of pH 2. The...

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Q JEE MAIN 2023

The volume of HCl , containing $73 \mathrm{~g} \mathrm{~L}^{-1}$, required to completely neutralise NaOH obtained by reacting 0.69 g of...

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Q JEE MAIN 2023

An indicator ' $x$ ' is used for studying the effect of variation in concentration of iodide on the rate...

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Q JEE MAIN 2023

20 mL of calcium hydroxide was consumed when it was reacted with 10 mL of unknown solution of H2SO4. Also...

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Q JEEE MAIN 2023

The titration curve of weak acid vs. strong base with phenolphthalein as indictor) is shown below. The Kphenolphthalein = 4...

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Q JEE MAIN 2023

'25 volume' hydrogen peroxide means

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Q JEE MAINS 2024

Only 2 mL of $\mathrm{KMnO}_4$ solution of unknown molarity is required to reach the end point of a titration of...

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Q JEE MAIN 2024

Thiosulphate reacts differently with iodine and bromine in the reaction given below : $2 \mathrm{~S}_2 \mathrm{O}_3^{2-}+\mathrm{I}_2 \rightarrow \mathrm{~S}_4 \mathrm{O}_6^{2-}+2 \mathrm{I}^{-}$...

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Q JEE MAIN 2024

The mass of silver (Molar mass of $Ag:108gmol^{-1}$) displaced by a quantity of electricity which displaces 5600 mL of $O_2$...

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Q JEE MAIN 2025

0.1 M solution of KI reacts with excess of $\mathrm{H}_{2} \mathrm{SO}_{4}$ and $\mathrm{KIO}_{3}$ solutions. According to equation $...

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Q JEE MAIN 2025

Which of the following oxidation reactions are carried out by both ${{\rm{K}}_2}{\rm{C}}{{\rm{r}}_2}{{\rm{O}}_7}$ and ${\rm{KMn}}{{\rm{O}}_4}$ in acidic medium? A. $...

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Q JEE MAIN 2025

Given below are two statements: Statement I: In the oxalic acid vs ${\rm{KMn}}{{\rm{O}}_4}$ (in the presence of dil ${{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}$) titration...

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