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CBSE Class 10 Chemistry Chemical Reaction and Equations (Hard)
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Question 1 of 10
1. Question
Which of the following is a displacement reaction?
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Question 2 of 10
2. Question
Which of the following statements about the given reaction are correct?
\(
3 \mathrm{Fe}(\mathrm{s})+4 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{Fe}_{3} \mathrm{O}_{4}(\mathrm{~s})+4 \mathrm{H}_{2}(\mathrm{~g})
\)
(i) Iron metal is getting oxidised
(ii) Water is getting reduced
(iii) Water is acting as reducing agent
(iv) Water is acting as oxidising agentCorrect
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Question 3 of 10
3. Question
Which of the following are exothermic processes?
(i) Reaction of water with quick lime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)Correct
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Question 4 of 10
4. Question
\(
\mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow 2+2 \mathrm{H}_{2} \mathrm{O}+\mathrm{Cl}_{2}
\)
Identify the substance oxidized in the above . equation.Correct
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Question 5 of 10
5. Question
When Ag is exposed to air it gets a black coating of
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Question 6 of 10
6. Question
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?
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Question 7 of 10
7. Question
\(
\text { When S02 gas is passed through saturated solution of } \mathrm{H} 2 \mathrm{~S} \text { , which of the following reaction occurs? }
\)Correct
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Question 8 of 10
8. Question
Name the products formed when iron filings are heated with dilute hydrochloric acid
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Question 9 of 10
9. Question
\(
\mathrm{Pb}+\mathrm{CuCl}_{2} \rightarrow \mathrm{PbCl}_{2}+\mathrm{Cu}
\)
The above reaction is an example ofCorrect
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Question 10 of 10
10. Question
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
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