HOTS 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
Practice set
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Solutions”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Solutions. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Molarity, molality, mole fraction”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: Molarity, molality, mole fraction. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Raoult’s law”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: Raoult’s law. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Ideal vs non-ideal”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: Ideal vs non-ideal. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “ΔTb, ΔTf, osmotic pressure”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: ΔTb, ΔTf, osmotic pressure. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “van’t Hoff factor i”, what mistake could they make while solving a question from Solutions?
Answer
They would use the wrong term or the reverse relation. Remember: van’t Hoff factor i. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Solutions · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Electrochemistry”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Electrochemistry. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Daniel cell”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Daniel cell. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Nernst equation”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Nernst equation. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Λm and κ”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Λm and κ. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Faraday’s laws”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Faraday’s laws. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Batteries and fuel cells as in chapter”, what mistake could they make while solving a question from Electrochemistry?
Answer
They would use the wrong term or the reverse relation. Remember: Batteries and fuel cells as in chapter. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Electrochemistry · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Chemical Kinetics”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Chemical Kinetics. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Rate law”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: Rate law. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Order vs molecularity”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: Order vs molecularity. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “First order t½=0.693/k”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: First order t½=0.693/k. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Arrhenius k=Ae^{−Ea/RT}”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: Arrhenius k=Ae^{−Ea/RT}. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Collision theory outline”, what mistake could they make while solving a question from Chemical Kinetics?
Answer
They would use the wrong term or the reverse relation. Remember: Collision theory outline. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Chemical Kinetics · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from The d- and f-Block Elements”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from The d- and f-Block Elements. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Variable oxidation states”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: Variable oxidation states. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Catalytic properties”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: Catalytic properties. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Coloured ions”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: Coloured ions. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Lanthanoid contraction”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: Lanthanoid contraction. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “KMnO4, K2Cr2O7 as in text”, what mistake could they make while solving a question from The d- and f-Block Elements?
Answer
They would use the wrong term or the reverse relation. Remember: KMnO4, K2Cr2O7 as in text. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: The d- and f-Block Elements · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Coordination Compounds”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Coordination Compounds. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Coordination number”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: Coordination number. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “IUPAC names”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: IUPAC names. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Isomerism”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: Isomerism. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “VBT vs CFT”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: VBT vs CFT. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Importance: haemoglobin, EDTA”, what mistake could they make while solving a question from Coordination Compounds?
Answer
They would use the wrong term or the reverse relation. Remember: Importance: haemoglobin, EDTA. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Coordination Compounds · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Haloalkanes and Haloarenes”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Haloalkanes and Haloarenes. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “SN1 and SN2”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: SN1 and SN2. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Optical isomerism in haloalkanes”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: Optical isomerism in haloalkanes. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Aryl halides less reactive to SN”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: Aryl halides less reactive to SN. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Environmental note on halo compounds”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: Environmental note on halo compounds. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Grignard intro”, what mistake could they make while solving a question from Haloalkanes and Haloarenes?
Answer
They would use the wrong term or the reverse relation. Remember: Grignard intro. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Haloalkanes and Haloarenes · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Alcohols, Phenols and Ethers”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Alcohols, Phenols and Ethers. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Acidity: phenol > water > alcohol”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Acidity: phenol > water > alcohol. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Lucas test”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Lucas test. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Kolbe, Reimer–Tiemann as in NCERT”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Kolbe, Reimer–Tiemann as in NCERT. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Williamson synthesis”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Williamson synthesis. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Methanol and ethanol uses”, what mistake could they make while solving a question from Alcohols, Phenols and Ethers?
Answer
They would use the wrong term or the reverse relation. Remember: Methanol and ethanol uses. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Alcohols, Phenols and Ethers · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “Mix MCQs with short answers so you remember both facts and explanations from Aldehydes, Ketones and Carboxylic Acids”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Mix MCQs with short answers so you remember both facts and explanations from Aldehydes, Ketones and Carboxylic Acids. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Nucleophilic addition”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Nucleophilic addition. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Aldol, Cannizzaro as in syllabus”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Aldol, Cannizzaro as in syllabus. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Tollens, Fehling”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Tollens, Fehling. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “Acidity of carboxylic acids”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Acidity of carboxylic acids. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “Hell–Volhard–Zelinsky if included”, what mistake could they make while solving a question from Aldehydes, Ketones and Carboxylic Acids?
Answer
They would use the wrong term or the reverse relation. Remember: Hell–Volhard–Zelinsky if included. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 12 · Subject: Chemistry · Chapter: Aldehydes, Ketones and Carboxylic Acids · 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-12/, then subject and chapter slugs.
Why is this a separate URL?
So students searching for “HOTS 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.
