Class 11 Chemistry Redox Reactions Sample Paper Style Practice
Sample Paper Style Practice for Class 11 Chemistry Redox Reactions. Try first, then reveal the answer. These are exam-oriented practice items, not copied board papers.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
Answers opened: 0
Practice set
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Oxidation in the chapter Redox Reactions.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Balancing in acidic/basic medium
C. Oxidation: increase in ON or loss of e−
D. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
Answer
C. Oxidation: increase in ON or loss of e−
Explanation
Oxidation: increase in ON or loss of e−. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q2MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
C. Electrode idea intro
D. Oxidising agent is reduced
Answer
D. Oxidising agent is reduced
Explanation
Oxidising agent is reduced. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q3MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
B. Balancing in acidic/basic medium
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
D. Disproportionation
Answer
B. Balancing in acidic/basic medium
Explanation
Balancing in acidic/basic medium. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q4MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Use the terms used in the NCERT book; do not replace them with unofficial names
B. Electrode idea intro
C. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer
B. Electrode idea intro
Explanation
Electrode idea intro. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. Disproportionation
C. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
B. Disproportionation
Explanation
Disproportionation. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q6MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
B. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
D. Electrode idea intro
Answer
A. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
Explanation
Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q7MCQ1 markEasy
Choose the correct statement related to Textbook first in the chapter Redox Reactions.
A. The textbook says the opposite of this statement
B. CBSE often tests a concept by asking a daily-life example from the same chapter
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. Use the terms used in the NCERT book; do not replace them with unofficial names
Answer
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q8MCQ1 markEasy
Choose the correct statement related to Keywords in the chapter Redox Reactions.
A. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
B. This happens only in a laboratory and never in daily life
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Answer
D. Every chapter ends with keywords or a summary that is useful for one-mark answers
Explanation
Every chapter ends with keywords or a summary that is useful for one-mark answers. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Redox Reactions.
A. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
B. This idea is not part of the NCERT chapter
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. Oxidation: increase in ON or loss of e−
Answer
C. CBSE often tests a concept by asking a daily-life example from the same chapter
Explanation
CBSE often tests a concept by asking a daily-life example from the same chapter. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q10MCQ1 markModerate
Choose the correct statement related to Diagrams in the chapter Redox Reactions.
A. Use the terms used in the NCERT book; do not replace them with unofficial names
B. The textbook says the opposite of this statement
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Oxidising agent is reduced
Answer
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Explanation
If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q11MCQ1 markEasy
Choose the correct statement related to Revision in the chapter Redox Reactions.
A. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
B. Balancing in acidic/basic medium
C. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
D. This happens only in a laboratory and never in daily life
Answer
C. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
Explanation
Write three points from Redox Reactions in your own words; that is enough for a short-answer start. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q12MCQ1 markEasy
Choose the correct statement related to Accuracy in the chapter Redox Reactions.
A. Oxidation: increase in ON or loss of e−
B. This idea is not part of the NCERT chapter
C. Use the terms used in the NCERT book; do not replace them with unofficial names
D. Electrode idea intro
Answer
C. Use the terms used in the NCERT book; do not replace them with unofficial names
Explanation
Use the terms used in the NCERT book; do not replace them with unofficial names. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Redox Reactions.
A. Oxidising agent is reduced
B. The textbook says the opposite of this statement
C. Disproportionation
D. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
Answer
D. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q14MCQ1 markEasy
Choose the correct statement related to Oxidation in the chapter Redox Reactions.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. This happens only in a laboratory and never in daily life
C. Electrode idea intro
D. Oxidation: increase in ON or loss of e−
Answer
D. Oxidation: increase in ON or loss of e−
Explanation
Oxidation: increase in ON or loss of e−. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q15MCQ1 markModerate
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Oxidising agent is reduced
B. Oxidation: increase in ON or loss of e−
C. Every chapter ends with keywords or a summary that is useful for one-mark answers
D. Disproportionation
Answer
A. Oxidising agent is reduced
Explanation
Oxidising agent is reduced. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q16MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Balancing in acidic/basic medium
B. CBSE often tests a concept by asking a daily-life example from the same chapter
C. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
D. Oxidising agent is reduced
Answer
A. Balancing in acidic/basic medium
Explanation
Balancing in acidic/basic medium. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. Electrode idea intro
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Balancing in acidic/basic medium
Answer
B. Electrode idea intro
Explanation
Electrode idea intro. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q18MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Every chapter ends with keywords or a summary that is useful for one-mark answers
B. Write three points from Redox Reactions in your own words; that is enough for a short-answer start
C. Disproportionation
D. Electrode idea intro
Answer
C. Disproportionation
Explanation
Disproportionation. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q19MCQ1 markEasy
Choose the correct statement related to Redox Reactions in the chapter Redox Reactions.
A. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
B. Oxidising agent is reduced
C. This topic is only for college
D. Disproportionation
Answer
A. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
Explanation
Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q20MCQ1 markModerate
Choose the correct statement related to Textbook first in the chapter Redox Reactions.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions
C. Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
Explanation
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Redox Reactions in about three points, with one example.
Answer
Oxidising agent is reduced. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q423 Mark3 marksModerate
Explain Redox Reactions in about three points, with one example.
Answer
Balancing in acidic/basic medium. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q433 Mark3 marksModerate
Explain Redox Reactions in about three points, with one example.
Answer
Electrode idea intro. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q443 Mark3 marksDifficult
Explain Redox Reactions in about three points, with one example.
Answer
Disproportionation. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q453 Mark3 marksModerateRevision pick
Explain Redox Reactions in about three points, with one example.
Answer
Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q463 Mark3 marksModerate
Explain Textbook first in about three points, with one example.
Answer
Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q473 Mark3 marksModerate
Explain Keywords in about three points, with one example.
Answer
Every chapter ends with keywords or a summary that is useful for one-mark answers. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q483 Mark3 marksDifficult
Explain Examples in about three points, with one example.
Answer
CBSE often tests a concept by asking a daily-life example from the same chapter. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q555 Mark5 marksModerate
Write a long answer on Redox Reactions. Include definition, explanation and one application.
Answer
Redox Reactions — Balancing in acidic/basic medium. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q565 Mark5 marksModerate
Write a long answer on Redox Reactions. Include definition, explanation and one application.
Answer
Redox Reactions — Electrode idea intro. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q575 Mark5 marksDifficultRevision pick
Write a long answer on Redox Reactions. Include definition, explanation and one application.
Answer
Redox Reactions — Disproportionation. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q585 Mark5 marksModerate
Write a long answer on Redox Reactions. Include definition, explanation and one application.
Answer
Redox Reactions — Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q595 Mark5 marksModerate
Write a long answer on Textbook first. Include definition, explanation and one application.
Answer
Textbook first — Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q605 Mark5 marksDifficult
Write a long answer on Keywords. Include definition, explanation and one application.
Answer
Keywords — Every chapter ends with keywords or a summary that is useful for one-mark answers. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q61Assertion and Reason1 markModerate
Assertion (A): CBSE often tests a concept by asking a daily-life example from the same chapter.
Reason (R): Examples is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q62Assertion and Reason1 markModerate
Assertion (A): If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.
Reason (R): Diagrams is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q63Assertion and Reason1 markModerate
Assertion (A): Write three points from Redox Reactions in your own words; that is enough for a short-answer start.
Reason (R): Revision is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q64Assertion and Reason1 markDifficult
Assertion (A): Use the terms used in the NCERT book; do not replace them with unofficial names.
Reason (R): Accuracy is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q65Assertion and Reason1 markModerate
Assertion (A): Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions.
Reason (R): Practice is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q66Assertion and Reason1 markModerate
Assertion (A): Oxidation: increase in ON or loss of e−.
Reason (R): Oxidation is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q67Assertion and Reason1 markModerate
Assertion (A): Oxidising agent is reduced.
Reason (R): Redox Reactions is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q68Assertion and Reason1 markDifficult
Assertion (A): Balancing in acidic/basic medium.
Reason (R): Redox Reactions is a key idea in the chapter Redox Reactions.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q69Case Based4 marksModerateRevision pick
A student is revising Redox Reactions and notes: “Electrode idea intro.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Redox Reactions.
(ii) Electrode idea intro.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q70Case Based4 marksModerate
A student is revising Redox Reactions and notes: “Disproportionation.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Redox Reactions.
(ii) Disproportionation.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q71Case Based4 marksModerate
A student is revising Redox Reactions and notes: “Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Redox Reactions.
(ii) Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q72Case Based4 marksDifficult
A student is revising Redox Reactions and notes: “Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Textbook first.
(ii) Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q73Case Based4 marksModerateRevision pick
A student is revising Redox Reactions and notes: “Every chapter ends with keywords or a summary that is useful for one-mark answers.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Keywords.
(ii) Every chapter ends with keywords or a summary that is useful for one-mark answers.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q74Case Based4 marksModerate
A student is revising Redox Reactions and notes: “CBSE often tests a concept by asking a daily-life example from the same chapter.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Examples.
(ii) CBSE often tests a concept by asking a daily-life example from the same chapter.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q75Case Based4 marksModerate
A student is revising Redox Reactions and notes: “If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Diagrams.
(ii) If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q76Case Based4 marksDifficult
A student is revising Redox Reactions and notes: “Write three points from Redox Reactions in your own words; that is enough for a short-answer start.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Revision.
(ii) Write three points from Redox Reactions in your own words; that is enough for a short-answer start.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q77Competency Based3 marksModerateRevision pick
Competency practice: A classmate can recall the heading Accuracy but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Use the terms used in the NCERT book; do not replace them with unofficial names. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q78Competency Based3 marksDifficult
Competency practice: A classmate can recall the heading Practice but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Mix MCQs with short answers so you remember both facts and explanations from Redox Reactions. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q79Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Oxidation but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Oxidation: increase in ON or loss of e−. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q80Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Redox Reactions but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Oxidising agent is reduced. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q81Competency Based3 marksDifficultRevision pick
Competency practice: A classmate can recall the heading Redox Reactions but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Balancing in acidic/basic medium. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q82Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Redox Reactions but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Electrode idea intro. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q83Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Redox Reactions but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Disproportionation. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q84Competency Based3 marksDifficult
Competency practice: A classmate can recall the heading Redox Reactions but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Redox Reactions is an NCERT chapter taught in CBSE Class 11 Chemistry. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Redox Reactions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
How should I use the 100 questions?
Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-11/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “Sample Paper Style Practice” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Today's 3-step path
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
