ZnO - C - Zn - CO 2Fe2O - 3C - 4Fe - 2CO2In the above reactions-

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Potassium Dichromate

ZnO + C → Zn ...

Question

$Z n O + C \to Z n + C O$
$2 F e_{2} O + 3 C \to 4 F e + 2 C O_{2}$
In the above reactions:

carbon is reduced

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carbon is oxidised

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metal oxide is reduced to metal

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metal oxide is oxidised

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Solution

The correct options are
B carbon is oxidised
C metal oxide is reduced to metal
$Z n O + C ⟶ Z n + C O$
$∵ C$ is gaining an atom of oxygen so it is undergoing oxidation.
$2 F e_{2} O + 3 C ⟶ 4 F e + 2 C O_{2}$
Metal oxide $(F e_{2} O)$ loses oxygen and converts to metal. Therefore, reduction is taking place.

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Similar questions

What is an oxidation reaction ? Identify in the following reactions :
(i) the substance oxidised (ii) the substance reduced.
$Z n O + C \to Z n + C O$

Q. What is redox reaction? In the reaction

Z n O + C \to Z n + C O

which substance gets oxidised and which gets reduced?

Q. Which of the following species are oxidised and reduced in the following (unbalanced) reaction?

C + Z n O ⟶ Z n + C O

Q. If a substance gains oxygen during a reaction, it is being oxidized. If it loses oxygen, it is being reduced. Oxidation and Reduction always take place together, so that if one substance is oxidized, another is reduced. Using this idea, say which substance is oxidised and which substance is reduced in each reaction.
i)

M g (s) + O_{2} (g) \to 2 M g O (s)

ii)

Z n O + C \to Z n + C O

iii)

F e_{2} O_{3} + 3 C O \to 2 F e + 3 C O_{2}

iv)

C r_{2} O_{3} + 2 A l \to 2 C r + A l_{2} O_{3}

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ZnO+C→Zn+CO2Fe2O+3C→4Fe+2CO2In the above reactions:

The correct options are B carbon is oxidised C metal oxide is reduced to metalZnO+C⟶Zn+CO∵C is gaining an atom of oxygen so it is undergoing oxidation.2Fe2O+3C⟶4Fe+2CO2Metal oxide (Fe2O) loses oxygen and converts to metal. Therefore, reduction is taking place.

$Z n O + C \to Z n + C O$
$2 F e_{2} O + 3 C \to 4 F e + 2 C O_{2}$
In the above reactions: