3 Mark Questions · original practice
3 Mark Questions for Class 12 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
Raoult’s law. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Ideal vs non-ideal. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
ΔTb, ΔTf, osmotic pressure. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
van’t Hoff factor i. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Solutions is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Nernst equation. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Λm and κ. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Faraday’s laws. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Batteries and fuel cells as in chapter. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Electrochemistry is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Order vs molecularity. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
First order t½=0.693/k. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Arrhenius k=Ae^{−Ea/RT}. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Collision theory outline. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Chemical Kinetics is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Catalytic properties. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Coloured ions. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Lanthanoid contraction. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
KMnO4, K2Cr2O7 as in text. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
The d- and f-Block Elements is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
IUPAC names. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Isomerism. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
VBT vs CFT. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Importance: haemoglobin, EDTA. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Coordination Compounds is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Optical isomerism in haloalkanes. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Aryl halides less reactive to SN. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Environmental note on halo compounds. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Grignard intro. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Haloalkanes and Haloarenes is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Lucas test. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Kolbe, Reimer–Tiemann as in NCERT. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Williamson synthesis. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Methanol and ethanol uses. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Alcohols, Phenols and Ethers is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Aldol, Cannizzaro as in syllabus. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Tollens, Fehling. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Acidity of carboxylic acids. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Hell–Volhard–Zelinsky if included. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Aldehydes, Ketones and Carboxylic Acids is an NCERT chapter taught in CBSE Class 12 Chemistry. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
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.
ExplanationThree-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
MetaClass: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
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.
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.
Hub /cbse/, then /cbse/class-12/, then subject and chapter slugs.
So students searching for “3 Mark Questions” land on a filtered set, while the chapter page remains the full 100-question bank. Same facts, different search intent.
Follow this loop every day: mixed test, current affairs, then today's subject. A new set arrives tomorrow.
After this page, use these three links — do not open a random page.
More sets from the same cluster — stay on this topic.
Timed papers with a scorecard — start any time, then return to a related quiz above.
