(D) The reaction between acidified potassium permanganate $(KMnO_4)$ and ferrous sulphate $(FeSO_4)$ is a classic redox reaction.In this reaction,$KMn

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$KMnO_4$ is an oxidising agent,it oxidises $FeSO_4$.

(D) The reaction between acidified potassium permanganate $(KMnO_4)$ and ferrous sulphate $(FeSO_4)$ is a classic redox reaction.In this reaction,$KMnO_4$ acts as a strong oxidising agent.It oxidises the ferrous ions $(Fe^{2+})$ present in the $FeSO_4$ solution to ferric ions $(Fe^{3+})$.During this process,the purple-coloured permanganate ions $(MnO_4^-)$ are reduced to colourless manganese ions $(Mn^{2+})$.As the concentration of $MnO_4^-$ decreases,the purple colour of the solution fades and eventually disappears.

Class 10 Science Chemical Reactions and Equations Mix Examples - Chemical Reactions and Equations

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$A$ dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

A
$KMnO_4$ is an unstable compound and decomposes in presence of $FeSO_4$ to a colourless compound.
B
$FeSO_4$ acts as an oxidising agent and oxidises $KMnO_4$.
C
The colour disappears due to dilution; no reaction is involved.
D
$KMnO_4$ is an oxidising agent,it oxidises $FeSO_4$.

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Mix Examples - Chemical Reactions and Equations

The following reaction is an example of a:
$4 NH_{3}(g) + 5 O_{2}(g) \rightarrow 4 NO(g) + 6 H_{2}O(g)$
$(i)$ Displacement reaction
$(ii)$ Combination reaction
$(iii)$ Redox reaction
$(iv)$ Neutralisation reaction

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You could have noted that when copper powder is heated in a china dish, the surface of copper powder becomes coated with black coloured substance.
$(i)$ Why has this black coloured substance formed?
$(ii)$ What is this black substance?
$(iii)$ Write the chemical equation of the reaction that takes place.

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Describe an activity to show a decomposition reaction in which light is used to decompose a reactant. Write the chemical equation of the reaction and state its one use.

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State what happens when:
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.

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On heating blue coloured powder of copper $(II)$ nitrate in a boiling tube,copper oxide (black),oxygen gas and a brown gas $X$ is formed.
$(a)$ Write a balanced chemical equation of the reaction.
$(b)$ Identify the brown gas $X$ evolved.

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$A$ dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

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The following reaction is an example of a:$4 NH_{3}(g) + 5 O_{2}(g) \rightarrow 4 NO(g) + 6 H_{2}O(g)$$(i)$ Displacement reaction$(ii)$ Combination reaction$(iii)$ Redox reaction$(iv)$ Neutralisation reaction

Describe an activity to show a decomposition reaction in which light is used to decompose a reactant. Write the chemical equation of the reaction and state its one use.

State what happens when:$(a)$ Chlorine gas is passed through dry slaked lime.Also write the chemical equation in each case.

On heating blue coloured powder of copper $(II)$ nitrate in a boiling tube,copper oxide (black),oxygen gas and a brown gas $X$ is formed.$(a)$ Write a balanced chemical equation of the reaction.$(b)$ Identify the brown gas $X$ evolved.

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The following reaction is an example of a:
$4 NH_{3}(g) + 5 O_{2}(g) \rightarrow 4 NO(g) + 6 H_{2}O(g)$
$(i)$ Displacement reaction
$(ii)$ Combination reaction
$(iii)$ Redox reaction
$(iv)$ Neutralisation reaction

State what happens when:
$(a)$ Chlorine gas is passed through dry slaked lime.
Also write the chemical equation in each case.

On heating blue coloured powder of copper $(II)$ nitrate in a boiling tube,copper oxide (black),oxygen gas and a brown gas $X$ is formed.
$(a)$ Write a balanced chemical equation of the reaction.
$(b)$ Identify the brown gas $X$ evolved.