Identify the substance that is oxidised and reduced in the following reaction- MnO 2 + 4 HCl → MnCl 2 + 2 H 2 O + Cl 2

In the given reaction, MnO 2 is losing oxygen to form MnCl 2 and HCl is losing hydrogen to form Cl 2 . MnO 2 Manganese dioxide + 4 HCl Hydrochloric acid → MnCl 2 Manganese dichloride + 2 H 2 O Water + Cl 2 Chlorine Therefore, we can conclude- Substance that is oxidised and which is acting as a reducing agent is HCl . Substance that is reduced and which is acting as an oxidising agent is MnO 2 .

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Which is a double displacement as well as a neutralisation reaction?

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Important Questions on Chemical Reactions And Equations

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 47

Which of the following processes does not involve either oxidation or reduction?

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 48

When sodium hydroxide is added to ferric chloride solution, a reddish brown precipitate is formed. The precipitate is seperated from the mixture by the process of _____.

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 49

Complete the chemical reaction.

${Mg}_{(s)} + H_{2} {SO}_{4_{(aq)}} \to ?$

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 50

Study the given diagram carefully.

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Identify X, Y and the type of reaction occurring.

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 1

In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (a), (b), (c) and (d) out of which one is correct?

List-I	List-II
(P) $A + B \to AB$	1. Double displacement
(Q) $AB \to A + B$	2. Combination
(R) $AB + XY \to AX + BY$	3. Displacement
(S) $AB + C \to AC + B$	4. Decomposition

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 2

In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (a), (b), (c) and (d) out of which one is correct?

List-I	List-II
(P) $2 Ca + O_{2}$	1. $2 HCl$
(Q) $4 Fe + 3 O_{2}$	2. $2 CaO$
(R) $H_{2} + {Cl}_{2}$	3. $2 {Fe}_{2} O_{3}$
(S) $2 Fe + 3 {Cl}_{2}$	4. $2 {FeCl}_{3}$

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 3

In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (a), (b), (c) and (d) out of which one is correct?

List-I	List-II
(P) $C + O_{2} \to {CO}_{2}$	1. Displacement
(Q) $2 AgBr \to 2 Ag + {Br}_{2}$	2. Combination
(R) $Zn + {CuSO}_{4} \to {ZnSO}_{4} + Cu$	3. Decomposition
(S) $NaOH + HCl \to NaCl + H_{2} O$	4. Neutralisation

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Foundation Course Chemistry>Chapter 1 - Chemical Reactions And Equations>EXERCISE>Q 4

In this section, each question has two matching lists. Choices for the correct combination of elements from List-I and List-II are given as options (a), (b), (c) and (d) out of which one is correct?

List-I	List-II
(P) $CuO + H_{2} \to Cu + H_{2} O$	1. Photodecomposition reaction
(Q) $2 AgBr \to 2 Ag + {Br}_{2}$	2. Redox reaction
(R) $2 H_{2} O \to 2 H_{2} + O_{2}$	3. Thermal decomposition reaction
(S) ${ZnCO}_{3} \to ZnO + {CO}_{2}$	4. Electrolytic decomposition reaction

Which is a double displacement as well as a neutralisation reaction?

Important Questions on Chemical Reactions And Equations

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