Redox Reactions — Practice Quiz
CBSE · Class 11 · Chemistry
Try a 4-question quiz on Redox Reactions for CBSE Class 11 Chemistry: tap an answer to check it and see why. 77 questions in the full chapter test.
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What does 'Redox' stand for?
In a redox reaction, oxidation is defined as:
Which of the following is an oxidizing agent?
In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, zinc is acting as:
Sample Questions
What is the oxidation number of oxygen in most compounds?
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-2
In most compounds, oxygen has an oxidation number of -2, with some exceptions like peroxides and superoxides.
A disproportionation reaction involves:
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An element being simultaneously oxidized and reduced
In a disproportionation reaction, one element exists in multiple oxidation states within the same reaction.
What is the oxidation number of hydrogen in most compounds?
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+1
Hydrogen typically has an oxidation number of +1, except in metal hydrides where it is -1.
Which type of reaction involves a compound breaking down into simpler substances?
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Decomposition reaction
In a decomposition reaction, a single compound breaks down into two or more simpler substances.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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