(D) In acidic medium,the reduction half-reaction for $KMnO_4$ is: $MnO_4^{-} + 8H^{+} + 5e^{-} \longrightarrow Mn^{2+} + 4H_2O$ Since $5$ electrons ar

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(D) In acidic medium,the reduction half-reaction for $KMnO_4$ is: $MnO_4^{-} + 8H^{+} + 5e^{-} \longrightarrow Mn^{2+} + 4H_2O$ Since $5$ electrons are involved,the n-factor is $5$. Therefore,the equivalent weight of $KMnO_4 = \frac{M_A}{5}$. Similarly,the reduction half-reaction for $K_2Cr_2O_7$ in acidic medium is: $Cr_2O_7^{2-} + 14H^{+} + 6e^{-} \longrightarrow 2Cr^{3+} + 7H_2O$ Since $6$ electrons are involved,the n-factor is $6$. Therefore,the equivalent weight of $K_2Cr_2O_7 = \frac{M_B}{6}$.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

Easy

Equivalent weights of $KMnO_4$ and $K_2Cr_2O_7$ in acidic medium are respectively. (Molecular weight of $KMnO_4 = M_A$ and Molecular weight of $K_2Cr_2O_7 = M_B$).

AP EAMCET 2022 All AP EAMCET

A
$\frac{M_A}{3}, \frac{M_B}{6}$
B
$\frac{M_A}{6}, \frac{M_B}{5}$
C
$\frac{M_A}{3}, \frac{M_B}{5}$
D
$\frac{M_A}{5}, \frac{M_B}{6}$

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Match the following types of reactions in List-$I$ with their corresponding unbalanced equations in List-$II$.
List-$I$ (Type of reaction) List-$II$ (Unbalanced equation)
$A$. Combination reaction $(i)$ $AgNO_3 + CaCl_2 \longrightarrow AgCl + Ca(NO_3)_2$
$B$. Decomposition reaction $(ii)$ $Cl_2 \longrightarrow Cl^- + ClO_3^-$
$C$. Disproportionation reaction $(iii)$ $Mg + N_2 \longrightarrow Mg_3N_2$
$D$. Displacement reaction $(iv)$ $KClO_3 \xrightarrow{\Delta} KCl + O_2$

List-$I$ (Type of reaction)	List-$II$ (Unbalanced equation)
$A$. Combination reaction	$(i)$ $AgNO_3 + CaCl_2 \longrightarrow AgCl + Ca(NO_3)_2$
$B$. Decomposition reaction	$(ii)$ $Cl_2 \longrightarrow Cl^- + ClO_3^-$
$C$. Disproportionation reaction	$(iii)$ $Mg + N_2 \longrightarrow Mg_3N_2$
$D$. Displacement reaction	$(iv)$ $KClO_3 \xrightarrow{\Delta} KCl + O_2$

EasyAP EAMCET 2022

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When copper is added to concentrated $H_2SO_4$,$CuSO_4$ is produced along with another sulphur-containing compound $X$. The compound $X$ is

MediumKVPY 2021

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Which of the following is not an intramolecular redox reaction?

Medium

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$200 \ mL$ of $x \times 10^{-3} \ M$ potassium dichromate $(K_2Cr_2O_7)$ is required to oxidise $750 \ mL$ of $0.6 \ M$ Mohr's salt $(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O)$ solution in acidic medium. Here $x =$ ?

DifficultJEE MAIN 2026

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Match List-$I$ with the List-$II$.

List-$I$ (Reaction) List-$II$ (Type of redox reaction)

$A$. $N_{2(g)} + O_{2(g)} \rightarrow 2 NO_{(g)}$ $I$. Decomposition

$B$. $2 Pb(NO_3)_{2(s)} \rightarrow 2 PbO_{(s)} + 4 NO_{2(g)} + O_{2(g)}$ $II$. Displacement

$C$. $2 Na_{(s)} + 2 H_2 O_{(l)} \rightarrow 2 NaOH_{(aq)} + H_{2(g)}$ $III$. Disproportionation

$D$. $2 NO_{2(g)} + 2 OH^-_{(aq)} \rightarrow NO^-_{2(aq)} + NO^-_{3(aq)} + H_2 O_{(l)}$ $IV$. Combination

Choose the correct answer from the options given below:

MediumJEE MAIN 2024

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List-$I$ (Reaction)	List-$II$ (Type of redox reaction)
$A$. $N_{2(g)} + O_{2(g)} \rightarrow 2 NO_{(g)}$	$I$. Decomposition
$B$. $2 Pb(NO_3)_{2(s)} \rightarrow 2 PbO_{(s)} + 4 NO_{2(g)} + O_{2(g)}$	$II$. Displacement
$C$. $2 Na_{(s)} + 2 H_2 O_{(l)} \rightarrow 2 NaOH_{(aq)} + H_{2(g)}$	$III$. Disproportionation
$D$. $2 NO_{2(g)} + 2 OH^-_{(aq)} \rightarrow NO^-_{2(aq)} + NO^-_{3(aq)} + H_2 O_{(l)}$	$IV$. Combination

Equivalent weights of $KMnO_4$ and $K_2Cr_2O_7$ in acidic medium are respectively. (Molecular weight of $KMnO_4 = M_A$ and Molecular weight of $K_2Cr_2O_7 = M_B$).

Similar Questions

When copper is added to concentrated $H_2SO_4$,$CuSO_4$ is produced along with another sulphur-containing compound $X$. The compound $X$ is

Which of the following is not an intramolecular redox reaction?

$200 \ mL$ of $x \times 10^{-3} \ M$ potassium dichromate $(K_2Cr_2O_7)$ is required to oxidise $750 \ mL$ of $0.6 \ M$ Mohr's salt $(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O)$ solution in acidic medium. Here $x =$ ?

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