Most Important Questions for Class 11 Chemistry. 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 Mole is 6 in the chapter Some Basic Concepts of Chemistry.
A. Limiting reagent
B. Mole is 6.022×10²³ particles
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. Some Basic Concepts of Chemistry is an NCERT chapter taught in CBSE Class 11 Chemistry
Answer
B. Mole is 6.022×10²³ particles
Explanation
Mole is 6.022×10²³ particles. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Some Basic Concepts of Chemistry in the chapter Some Basic Concepts of Chemistry.
A. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
B. Laws of chemical combination
C. Mix MCQs with short answers so you remember both facts and explanations from Some Basic Concepts of Chemistry
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
B. Laws of chemical combination
Explanation
Laws of chemical combination. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Some Basic Concepts of Chemistry.
A. Write three points from Some Basic Concepts of Chemistry 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. Mole is 6.022×10²³ particles
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: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Some Basic Concepts of Chemistry.
A. The textbook says the opposite of this statement
B. Molarity = moles/litre
C. Laws of chemical combination
D. Mix MCQs with short answers so you remember both facts and explanations from Some Basic Concepts of Chemistry
Answer
D. Mix MCQs with short answers so you remember both facts and explanations from Some Basic Concepts of Chemistry
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Some Basic Concepts of Chemistry. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Some Basic Concepts of Chemistry in the chapter Some Basic Concepts of Chemistry.
A. Limiting reagent
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Empirical vs molecular formula
Answer
D. Empirical vs molecular formula
Explanation
Empirical vs molecular formula. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Some Basic Concepts of Chemistry in about three points, with one example.
Answer
Molarity = moles/litre. 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: Some Basic Concepts of Chemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Structure of Atom in the chapter Structure of Atom.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Photon E=hν
C. Structure of Atom is an NCERT chapter taught in CBSE Class 11 Chemistry
D. n, l, m, s
Answer
B. Photon E=hν
Explanation
Photon E=hν. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Structure of Atom in the chapter Structure of Atom.
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 Structure of Atom
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Dual nature of electron
Answer
D. Dual nature of electron
Explanation
Dual nature of electron. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Structure of Atom.
A. This idea is not part of the NCERT chapter
B. Photon E=hν
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. Write three points from Structure of Atom in your own words; that is enough for a short-answer start
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: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Structure of Atom.
A. Mix MCQs with short answers so you remember both facts and explanations from Structure of Atom
B. The textbook says the opposite of this statement
C. Bohr model limits
D. Dual nature of electron
Answer
A. Mix MCQs with short answers so you remember both facts and explanations from Structure of Atom
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Structure of Atom. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Structure of Atom in the chapter Structure of Atom.
A. n, l, m, s
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Aufbau, Pauli, Hund
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
C. Aufbau, Pauli, Hund
Explanation
Aufbau, Pauli, Hund. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Structure of Atom in about three points, with one example.
Answer
Bohr model limits. 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: Structure of Atom · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Classification of Elements and Periodicity in Properties in the chapter Classification of Elements and Periodicity in Properties.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Atomic radius decreases across a period
C. Modern table is Z-based
D. Classification of Elements and Periodicity in Properties is an NCERT chapter taught in CBSE Class 11 Chemistry
Answer
C. Modern table is Z-based
Explanation
Modern table is Z-based. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Classification of Elements and Periodicity in Properties in the chapter Classification of Elements and Periodicity in Properties.
A. Mix MCQs with short answers so you remember both facts and explanations from Classification of Elements and Periodicity in Properties
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Electronegativity
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
C. Electronegativity
Explanation
Electronegativity. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Classification of Elements and Periodicity in Properties.
A. This idea is not part of the NCERT chapter
B. Write three points from Classification of Elements and Periodicity in Properties in your own words; that is enough for a short-answer start
C. Modern table is Z-based
D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer
D. 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: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Classification of Elements and Periodicity in Properties.
A. s, p, d, f blocks
B. Mix MCQs with short answers so you remember both facts and explanations from Classification of Elements and Periodicity in Properties
C. The textbook says the opposite of this statement
D. Electronegativity
Answer
B. Mix MCQs with short answers so you remember both facts and explanations from Classification of Elements and Periodicity in Properties
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Classification of Elements and Periodicity in Properties. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Classification of Elements and Periodicity in Properties in the chapter Classification of Elements and Periodicity in Properties.
A. Ionisation enthalpy
B. Atomic radius decreases across a period
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
A. Ionisation enthalpy
Explanation
Ionisation enthalpy. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Classification of Elements and Periodicity in Properties in about three points, with one example.
Answer
s, p, d, f blocks. 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: Classification of Elements and Periodicity in Properties · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Chemical Bonding and Molecular Structure in the chapter Chemical Bonding and Molecular Structure.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Octet exceptions
C. σ and π bonds
D. Chemical Bonding and Molecular Structure is an NCERT chapter taught in CBSE Class 11 Chemistry
Answer
B. Octet exceptions
Explanation
Octet exceptions. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Chemical Bonding and Molecular Structure in the chapter Chemical Bonding and Molecular Structure.
A. Mix MCQs with short answers so you remember both facts and explanations from Chemical Bonding and Molecular Structure
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Hydrogen bond
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
C. Hydrogen bond
Explanation
Hydrogen bond. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Chemical Bonding and Molecular Structure.
A. Write three points from Chemical Bonding and Molecular Structure 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. Octet exceptions
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: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Chemical Bonding and Molecular Structure.
A. The textbook says the opposite of this statement
B. Hydrogen bond
C. Mix MCQs with short answers so you remember both facts and explanations from Chemical Bonding and Molecular Structure
D. VSEPR shapes
Answer
C. Mix MCQs with short answers so you remember both facts and explanations from Chemical Bonding and Molecular Structure
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Chemical Bonding and Molecular Structure. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Chemical Bonding and Molecular Structure in the chapter Chemical Bonding and Molecular Structure.
A. σ and π bonds
B. Hybridisation
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
B. Hybridisation
Explanation
Hybridisation. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Chemical Bonding and Molecular Structure in about three points, with one example.
Answer
VSEPR shapes. 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: Chemical Bonding and Molecular Structure · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to ΔU=q+w (chemistry sign in the chapter Thermodynamics.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Thermodynamics is an NCERT chapter taught in CBSE Class 11 Chemistry
C. ΔU=q+w (chemistry sign: w=−PΔV)
D. ΔG=ΔH−TΔS
Answer
C. ΔU=q+w (chemistry sign: w=−PΔV)
Explanation
ΔU=q+w (chemistry sign: w=−PΔV). The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Thermodynamics in the chapter Thermodynamics.
A. Standard enthalpy of formation
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Mix MCQs with short answers so you remember both facts and explanations from Thermodynamics
Answer
A. Standard enthalpy of formation
Explanation
Standard enthalpy of formation. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Thermodynamics.
A. This idea is not part of the NCERT chapter
B. ΔU=q+w (chemistry sign: w=−PΔV)
C. CBSE often tests a concept by asking a daily-life example from the same chapter
D. Write three points from Thermodynamics in your own words; that is enough for a short-answer start
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: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Thermodynamics.
A. Hess’s law
B. The textbook says the opposite of this statement
C. Mix MCQs with short answers so you remember both facts and explanations from Thermodynamics
D. Standard enthalpy of formation
Answer
C. Mix MCQs with short answers so you remember both facts and explanations from Thermodynamics
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Thermodynamics. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Thermodynamics in the chapter Thermodynamics.
A. Extensive vs intensive
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. ΔG=ΔH−TΔS
Answer
A. Extensive vs intensive
Explanation
Extensive vs intensive. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Thermodynamics in about three points, with one example.
Answer
Hess’s law. 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: Thermodynamics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Equilibrium in the chapter Equilibrium.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. Kw=10⁻¹⁴ at 25°C
C. Equilibrium is an NCERT chapter taught in CBSE Class 11 Chemistry
D. Kc, Kp
Answer
D. Kc, Kp
Explanation
Kc, Kp. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Equilibrium in the chapter Equilibrium.
A. Buffer idea as in chapter
B. Mix MCQs with short answers so you remember both facts and explanations from Equilibrium
C. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
A. Buffer idea as in chapter
Explanation
Buffer idea as in chapter. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Equilibrium.
A. Write three points from Equilibrium 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. Kc, Kp
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: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Equilibrium.
A. The textbook says the opposite of this statement
B. Buffer idea as in chapter
C. Mix MCQs with short answers so you remember both facts and explanations from Equilibrium
D. Le Chatelier
Answer
C. Mix MCQs with short answers so you remember both facts and explanations from Equilibrium
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Equilibrium. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Equilibrium in the chapter Equilibrium.
A. pH of strong acids
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Kw=10⁻¹⁴ at 25°C
Answer
A. pH of strong acids
Explanation
pH of strong acids. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Equilibrium in about three points, with one example.
Answer
Le Chatelier. 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: Equilibrium · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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).
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).
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).
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).
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).
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).
Q1MCQ1 markEasyRevision pick
Choose the correct statement related to Organic Chemistry – Some Basic Principles and Techniques in the chapter Organic Chemistry – Some Basic Principles and Techniques.
A. CBSE often tests a concept by asking a daily-life example from the same chapter
B. IUPAC naming
C. Organic Chemistry – Some Basic Principles and Techniques is an NCERT chapter taught in CBSE Class 11 Chemistry
D. Nucleophile and electrophile
Answer
B. IUPAC naming
Explanation
IUPAC naming. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Organic Chemistry – Some Basic Principles and Techniques in the chapter Organic Chemistry – Some Basic Principles and Techniques.
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 Organic Chemistry – Some Basic Principles and Techniques
C. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
D. Isomerism types
Answer
D. Isomerism types
Explanation
Isomerism types. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Examples in the chapter Organic Chemistry – Some Basic Principles and Techniques.
A. This idea is not part of the NCERT chapter
B. Write three points from Organic Chemistry – Some Basic Principles and Techniques in your own words; that is enough for a short-answer start
C. IUPAC naming
D. CBSE often tests a concept by asking a daily-life example from the same chapter
Answer
D. 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.
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Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Practice in the chapter Organic Chemistry – Some Basic Principles and Techniques.
A. Mix MCQs with short answers so you remember both facts and explanations from Organic Chemistry – Some Basic Principles and Techniques
B. The textbook says the opposite of this statement
C. Isomerism types
D. Inductive, resonance, hyperconjugation
Answer
A. Mix MCQs with short answers so you remember both facts and explanations from Organic Chemistry – Some Basic Principles and Techniques
Explanation
Mix MCQs with short answers so you remember both facts and explanations from Organic Chemistry – Some Basic Principles and Techniques. The other options mix ideas from nearby topics or reverse the textbook fact.
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Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Organic Chemistry – Some Basic Principles and Techniques in the chapter Organic Chemistry – Some Basic Principles and Techniques.
A. Purification methods
B. Read the definitions, diagrams and solved examples in the NCERT textbook before practising extra questions
C. Nucleophile and electrophile
D. If the chapter has a diagram, practise labelling it — many school tests ask for labelled figures
Answer
A. Purification methods
Explanation
Purification methods. The other options mix ideas from nearby topics or reverse the textbook fact.
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Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Organic Chemistry – Some Basic Principles and Techniques in about three points, with one example.
Answer
Inductive, resonance, hyperconjugation. 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.
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Class: Class 11 · Subject: Chemistry · Chapter: Organic Chemistry – Some Basic Principles and Techniques · 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.
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 “Most Important Questions” 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.
