(B) The given reaction is $4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$.In this reaction,the oxidation state of $Fe$ increases from $0$ to $+3$,which means $Fe$

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Metallic iron is reduced to $Fe^{3+}$

(B) The given reaction is $4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$.In this reaction,the oxidation state of $Fe$ increases from $0$ to $+3$,which means $Fe$ is oxidised.Since $Fe$ is oxidised,it acts as a reducing agent.Conversely,the oxidation state of $O$ decreases from $0$ to $-2$,meaning $O_2$ is reduced.Statement $B$ is incorrect because metallic iron is oxidised to $Fe^{3+}$,not reduced.

Class 11 Chemistry Redox Reactions Mix Examples-Redox Reactions

Medium

The following reaction describes the rusting of iron:
$4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$
Which one of the following statements is incorrect?

AIIMS 1998 All AIIMS

A
This is an example of a redox reaction
B
Metallic iron is reduced to $Fe^{3+}$
C
$Fe^{3+}$ is an oxidising agent
D
Metallic iron is a reducing agent

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Redox Reactions

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Mix Examples-Redox Reactions

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AIIMS 1998 Paper All AIIMS years →

Which of the following changes does not occur when $K_2Cr_2O_7$ reacts with $H_2O_2$ solution?

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$X$ and $Y$ are the number of electrons involved, respectively, during the oxidation of $I^{-}$ to $I_{2}$ and $S^{2-}$ to $S$ by acidified $K_{2}Cr_{2}O_{7}$. The value of $X + Y$ is . . . . . . .

DifficultJEE MAIN 2026

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Assign $A, B, C, D$ from the given type of reaction.
$PbO_2 + HNO_3 \text{ (dil.)} \longrightarrow \text{No reaction}$

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When silver nitrate is heated to red hot,what is formed?

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$15 \ mL$ of aqueous solution of $Fe^{2+}$ in acidic medium completely reacted with $20 \ mL$ of $0.03 \ M$ aqueous $Cr_{2}O_{7}^{2-}$. The molarity of the $Fe^{2+}$ solution is ........... $\times 10^{-2} \ M$ (Round off to the Nearest Integer).

DifficultJEE MAIN 2021

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The following reaction describes the rusting of iron:$4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$Which one of the following statements is incorrect?

Similar Questions

Which of the following changes does not occur when $K_2Cr_2O_7$ reacts with $H_2O_2$ solution?

$X$ and $Y$ are the number of electrons involved, respectively, during the oxidation of $I^{-}$ to $I_{2}$ and $S^{2-}$ to $S$ by acidified $K_{2}Cr_{2}O_{7}$. The value of $X + Y$ is . . . . . . .

Assign $A, B, C, D$ from the given type of reaction.$PbO_2 + HNO_3 \text{ (dil.)} \longrightarrow \text{No reaction}$

When silver nitrate is heated to red hot,what is formed?

$15 \ mL$ of aqueous solution of $Fe^{2+}$ in acidic medium completely reacted with $20 \ mL$ of $0.03 \ M$ aqueous $Cr_{2}O_{7}^{2-}$. The molarity of the $Fe^{2+}$ solution is ........... $\times 10^{-2} \ M$ (Round off to the Nearest Integer).

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The following reaction describes the rusting of iron:
$4Fe + 3O_2 \to 4Fe^{3+} + 6O^{2-}$
Which one of the following statements is incorrect?

Assign $A, B, C, D$ from the given type of reaction.
$PbO_2 + HNO_3 \text{ (dil.)} \longrightarrow \text{No reaction}$