CUET Organic Chemistry Questions PDF Download Here

Overview: Organic Chemistry carries the single largest share of the CUET Chemistry paper — roughly 18 to 22 of the 50 questions, based on previous year trends from 2022 to 2026. This guide gives you 30 new CUET Organic Chemistry Questions with answers, unit-wise weightage, a 60-day revision plan, and the six mistakes that cost students the most marks.

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What Are the Most Important CUET Organic Chemistry  Questions for 2027?

CUET Chemistry 2027: Quick Facts

Particulars	Details
Subject	Chemistry (Domain Subject, Code 306)
Conducting Body	National Testing Agency (NTA)
Total Questions	50
Questions to Attempt	All 50 (no optional questions)
Total Marks	250
Marking Scheme	+5 correct, −1 incorrect, 0 unattempted
Duration	60 minutes
Mode	Computer Based Test (CBT)
Medium	13 languages, including English and Hindi
Syllabus Base	NCERT Class 12 Chemistry (10 units)
Organic Chemistry Units	5 of 10
Official Website	cuet.nta.nic.in

Related: CUET Chemistry Exam Pattern | CUET Marking Scheme | CUET Total Marks

Important CUET Organic Chemistry Questions PDF

Why CUET Organic Chemistry Questions Decide Your CUET Chemistry Score?

Chemistry is one of the 23 CUET domain subjects, and it is among the three most chosen. In 2025, roughly 5.7 lakh candidates appeared for the Chemistry paper, and the highest score recorded was 247.64 out of 250.

At that level of competition, a single careless mistake changes your rank band.

Here is what makes Organic Chemistry different from the rest of the paper. Physical Chemistry questions need calculation, so they eat your 60 minutes. Inorganic Chemistry questions are memory-heavy but scattered.

Organic Chemistry sits in the middle — the questions are recall-plus-reasoning, and a well-prepared student answers most of them in under 40 seconds each.

That speed advantage is why practising CUET Organic Chemistry Questions, alongside the wider set of CUET Chemistry important questions, gives you the highest return per hour of study for CUET 2027.

Unit-Wise Weightage of CUET Organic Chemistry Questions

NTA does not publish official unit-wise weightage. The table below is our educators' analysis of CUET Chemistry papers from 2022 to 2026, so treat it as a planning guide and not as an official figure.

Organic Unit	Observed Questions (out of 50)	Difficulty	Priority
Alcohols, Phenols and Ethers	5–7	Moderate	Highest
Haloalkanes and Haloarenes	4–6	Moderate	Highest
Aldehydes, Ketones and Carboxylic Acids	4–6	Moderate to High	High
Amines	2–4	Easy to Moderate	High
Biomolecules	3–4	Easy	Quick scoring
Total (Organic)	18–22	—	—

Verify before you plan for CUET 2027: Polymers, Chemistry in Everyday Life, Solid State, Surface Chemistry, p-Block Elements, and General Principles of Isolation of Elements were removed when NTA aligned the syllabus with the rationalised NCERT curriculum.

Several coaching PDFs still list Polymers as an organic chapter. Check the CUET Chemistry syllabus against the official PDF on cuet.nta.nic.in before you spend a week on a deleted chapter.

Download CUET 2027 Subject Wise Syllabus PDFs

Important Topics for CUET Organic Chemistry Questions 2027

Cover these five foundations first. Without them, practising CUET questions for Organic Chemistry turns into guesswork rather than revision.

1. IUPAC nomenclature. Learn naming for haloalkanes, alcohols, phenols, ethers, aldehydes, ketones, carboxylic acids, and amines. CUET asks at least one direct naming question most years.

2. Isomerism. Structural isomerism (chain, position, functional group, metamerism) and stereoisomerism (geometrical and optical). Optical activity of haloalkanes is a repeat favourite.

3. Reaction types and mechanisms. These drive the reasoning-based CUET Organic Chemistry MCQs. Nucleophilic substitution (SN1 versus SN2), electrophilic aromatic substitution, addition, and elimination. You need the order of reactivity, not the full mechanism drawing.

4. Functional group reactions and named tests. Lucas, Tollens', Fehling's, iodoform, Hinsberg's, carbylamine, Reimer–Tiemann, Cannizzaro, Aldol, HVZ, Finkelstein, Williamson.

5. Electronic effects. Inductive, resonance, and hyperconjugation — these explain acidity of phenols and carboxylic acids, basicity of amines, and carbocation stability. Almost every reasoning-based question traces back here.

Also read: CUET Chemistry Important Topics | CUET Chemistry Notes | CUET Chemistry Important Formulas

CUET Organic Chemistry Questions with Answers 2027

These CUET Organic Chemistry Questions are newly framed CUET Organic Chemistry MCQs with answers, arranged unit-wise and matched to the NCERT-based syllabus and the +5/−1 CUET 2027 format. Each answer carries a one-line reason so you learn the logic, not just the option.

CUET Organic Chemistry Questions: Haloalkanes and Haloarenes

Q1. Which compound undergoes an SN1 reaction most rapidly?

(a) CH₃Cl

 (b) CH₃CH₂Cl

(c) (CH₃)₂CHCl

(d) (CH₃)₃CCl

Answer: (d) — SN1 rate depends on carbocation stability, and the tertiary carbocation is the most stable.

Q2. The correct order of reactivity of haloalkanes towards SN2 substitution is:

 (a) R–I > R–Br > R–Cl > R–F

b) R–F > R–Cl > R–Br > R–I

c) R–Cl > R–Br > R–I > R–F

(d) R–Br > R–I > R–Cl > R–F

 Answer: (a) — the C–I bond is the weakest, so iodide is the best leaving group.

Q3. Chlorobenzene is far less reactive than chloromethane towards nucleophilic substitution mainly because:

(a) benzene shows a +I effect

(b) resonance gives the C–Cl bond partial double bond character

(c) the carbon is sp³ hybridised

(d) the C–Cl bond is longer

Answer: (b) — resonance shortens and strengthens the C–Cl bond, making it hard to break.

Q4. Chlorobenzene treated with Cl₂ in the presence of anhydrous FeCl₃ gives mainly:

 (a) 1,2- and 1,4-dichlorobenzene

 (b) 1,3-dichlorobenzene

(c) benzene

(d) 1,3,5-trichlorobenzene

 Answer: (a) — a halogen deactivates the ring but is still ortho- and para-directing.

Q5. Ethyl chloride is converted to ethyl iodide by heating with: (

1. a) NaI in dry acetone

(b) I₂ in CCl₄

(c) aqueous KI

 (d) HI gas

Answer: (a) — the Finkelstein reaction; NaCl is insoluble in acetone and precipitates out.

Q6. An optically active alkyl halide gives an almost racemic product on hydrolysis. The mechanism is:

(a) SN2

 (b) SN1

(c) E1

(d) E2

Answer: (b) — the planar carbocation intermediate is attacked from both faces. SN2, by contrast, gives inversion.

CUET Organic Chemistry Questions: Alcohols, Phenols and Ethers

Q7. Which is the strongest acid?

 (a) Phenol

b) o-nitrophenol

(c) p-nitrophenol

(d) 2,4,6-trinitrophenol

 Answer: (d) — picric acid; three −NO₂ groups strongly stabilise the phenoxide ion.

Q8. Lucas reagent is a mixture of:

(a) concentrated HCl and anhydrous ZnCl₂

(b) concentrated H₂SO₄ and NaCl

(c) I₂ and NaOH

(d) CrO₃ in acetic acid

Answer: (a) — a tertiary alcohol gives immediate turbidity, secondary takes about five minutes, primary shows none at room temperature.

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Q9. Phenol reacts with CHCl₃ and aqueous NaOH, and on hydrolysis yields salicylaldehyde. The reaction is:

a) Kolbe's reaction

 (b) Reimer–Tiemann reaction

 (c) Williamson synthesis

(d) Cannizzaro reaction

 Answer: (b) — dichlorocarbene attacks the ortho position of the phenoxide ring.

Q10. Williamson ether synthesis gives the best yield when the alkyl halide is:

(a) tertiary

(b) primary

(c) aryl

(d) vinyl

Answer: (b) — a bulky tertiary halide favours elimination over SN2 substitution.

Q11. The correct order of ease of dehydration of alcohols using concentrated H₂SO₄ is:

(a) 1° > 2° > 3°

(b) 3° > 2° > 1°

(c) 2° > 3° > 1°

(d) all react equally

Answer: (b) — dehydration proceeds through a carbocation, and the tertiary one forms most easily.

Q12. Anisole heated with excess HI produces:

(a) phenol and methyl iodide

(b) iodobenzene and methanol

(c) benzene and methanol

(d) phenol and methane

Answer: (a) — iodide attacks the methyl carbon because the aryl–oxygen bond has partial double bond character.

Q13. Which reagent distinguishes ethanol from methanol?

(a) Lucas reagent

(b) I₂ with NaOH (iodoform test)

(c) Tollens' reagent

(d) Fehling's solution

Answer: (b) — ethanol gives a yellow iodoform precipitate; methanol lacks the required CH₃–CH(OH)– group.

CUET Organic Chemistry Questions: Aldehydes, Ketones and Carboxylic Acids

Q14. Which of the following does not respond to the iodoform test?

(a) Ethanol

b) Acetone

(c) Acetaldehyde

(d) Benzaldehyde

Answer: (d) — benzaldehyde has no CH₃CO– or CH₃CH(OH)– group.

Q15. Cannizzaro reaction is given by:

(a) acetaldehyde

(b) formaldehyde

(c) acetone

(d) propanal

Answer: (b) — the reaction needs an aldehyde with no α-hydrogen.

Q16. Reactivity towards nucleophilic addition is highest for:

(a) acetone

(b) acetaldehyde

(c) formaldehyde

(d) benzaldehyde

Answer: (c) — no alkyl or aryl group is present to donate electrons or crowd the carbonyl carbon.

Q17. Which is the strongest acid?

(a) CH₃COOH

(b) HCOOH

(c) ClCH₂COOH

(d) CH₃CH₂COOH

Answer: (c) — the −I effect of chlorine stabilises the carboxylate anion most effectively.

Q18. Tollens' reagent is:

(a) ammoniacal silver nitrate

(b) alkaline copper sulphate

(c) sodium bisulphite solution

(d) acidified potassium dichromate

Answer: (a) — aldehydes reduce it to a silver mirror; ketones do not react.

Q19. Aldol condensation is possible only when the carbonyl compound has:

(a) at least one α-hydrogen

(b) no α-hydrogen

(c) an aromatic ring

(d) a halogen atom

Answer: (a) — the base removes an α-hydrogen to generate the carbanion.

Q20. The Hell–Volhard–Zelinsky reaction is used to prepare:

(a) α-halogenated carboxylic acids

(b) esters

(c) amides

(d) alcohols

Answer: (a) — carboxylic acids with an α-hydrogen react with X₂ in the presence of red phosphorus.

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Q21. Acetophenone on treatment with I₂ and NaOH gives:

(a) benzoic acid and iodoform

(b) sodium benzoate and iodoform

(c) benzaldehyde only

(d) no reaction

Answer: (b) — the methyl ketone is cleaved, leaving the carboxylate salt in alkaline medium.

CUET Organic Chemistry Questions: Amines

Q22. The correct order of basic strength of methylamines in aqueous solution is:

(a) NH₃ > CH₃NH₂ > (CH₃)₂NH > (CH₃)₃N

(b) (CH₃)₂NH > CH₃NH₂ > (CH₃)₃N > NH₃

(c) (CH₃)₃N > (CH₃)₂NH > CH₃NH₂ > NH₃

(d) CH₃NH₂ > (CH₃)₂NH > NH₃ > (CH₃)₃N

Answer: (b) — in water, the +I effect, steric crowding, and hydration of the cation act together.

Q23. Hinsberg's reagent is:

(a) benzenesulphonyl chloride

(b) benzoyl chloride

(c) acetic anhydride

(d) NaNO₂ with HCl

Answer: (a) — it separates primary, secondary, and tertiary amines by their differing behaviour with alkali.

Q24. The carbylamine (isocyanide) test is given by:

(a) primary amines only

(b) secondary amines only

(c) tertiary amines only

(d) all amines

Answer: (a) — a foul-smelling isocyanide forms with CHCl₃ and alcoholic KOH.

Q25. Aniline treated with NaNO₂ and HCl at 273–278 K gives:

(a) benzenediazonium chloride

(b) phenol

(c) nitrobenzene

(d) chlorobenzene

Answer: (a) — diazotisation; above 278 K the salt decomposes to phenol.

Q26. Gabriel phthalimide synthesis is unsuitable for preparing:

(a) primary aliphatic amines

b) aromatic primary amines

(c) methylamine

(d) ethylamine

Answer: (b) — aryl halides do not undergo the required nucleophilic substitution with the phthalimide anion.

Q27. Aniline does not undergo Friedel–Crafts alkylation because:

(a) the −NH₂ group is meta-directing

(b) aniline is a base and forms a complex with AlCl₃

(c) the ring is deactivated by resonance

(d) aniline is insoluble in the solvent

Answer: (b) — the resulting salt leaves nitrogen positively charged, which strongly deactivates the ring.

CUET Organic Chemistry Questions: Biomolecules

Q28. Which of the following is a reducing sugar?

(a) Sucrose

(b) Maltose

(c) Starch

(d) Cellulose

Answer: (b) — maltose retains a free aldehydic group; in sucrose both anomeric carbons are locked in the glycosidic linkage.

Q29. Sucrose on hydrolysis yields:

(a) glucose and glucose

(b) glucose and fructose

(c) galactose and glucose

(d) fructose and fructose

Answer: (b) — the mixture is called invert sugar because the sign of optical rotation reverses.

Q30. In double-stranded DNA, thymine pairs with:

(a) adenine

(b) guanine

(c) cytosine

(d) uracil

Answer: (a) — adenine–thymine pairing uses two hydrogen bonds; uracil replaces thymine only in RNA.

More CUET Organic Chemistry Questions practice: CUET Chemistry Biomolecules PYQs | CUET Chemistry Question Papers | CUET Chemistry Answer Key

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Faculty Technique: Solving CUET Organic Chemistry Questions in Under 40 Seconds

You get 60 minutes for 50 questions, which is 72 seconds per question. Physical Chemistry numericals will take longer than that, so Organic Chemistry has to subsidise them. Our CUET faculty teach a three-filter method.

Filter 1 — Classify the question in five seconds

Almost all CUET Organic Chemistry Questions fall into one of four types: naming, reagent identification, reactivity order, or product prediction. Naming and reagent questions are pure recall. Answer or skip them immediately; never reason through them.

Filter 2 — For reactivity-order questions, apply one rule only. 

Acidity of phenols and acids depends on how well the negative charge is stabilised. Basicity of amines depends on availability of the nitrogen lone pair. Substitution rate depends on carbocation stability (SN1) or steric crowding (SN2). Identify which rule applies, then read the options.

Filter 3 — Eliminate on structure, not memory

In product-prediction questions, count carbons in each option. Options with the wrong carbon count are wrong regardless of the reagent. This eliminates two options in most questions.

The −1 rule. In CUET 2027, with +5 and −1 marking, a blind guess among four options has a negative expected value. But if you eliminate two options, guessing becomes worth it. So mark a question as guessable only after you have ruled out two choices. Read our CUET marking scheme guide for the full arithmetic.

60-Day Revision Plan for CUET Organic Chemistry Questions

Use this timeline if you are starting focused revision of CUET Organic Chemistry Questions two months before CUET 2027.

Days	Focus	Daily Target
1–10	Haloalkanes and Haloarenes + IUPAC naming	NCERT chapter + 25 MCQs
11–22	Alcohols, Phenols and Ethers	NCERT chapter + 30 MCQs
23–34	Aldehydes, Ketones and Carboxylic Acids	NCERT chapter + 30 MCQs
35–42	Amines and diazonium salts	NCERT chapter + 25 MCQs
43–48	Biomolecules	NCERT chapter + 20 MCQs
49–54	Named reactions and reagents revision	One-page summary + 40 mixed MCQs
55–60	Full-length practice under 60-minute timer	2 papers + error log

Pair your CUET Organic Chemistry Questions practice with a broader CUET study plan so Physical and Inorganic Chemistry are not left behind. Droppers targeting CUET 2027 should compress this to 40 days using the CUET preparation strategy for droppers.

Six Mistakes Students Make with CUET Organic Chemistry Questions

These are the six errors our CUET faculty see most often when students practise CUET Organic Chemistry MCQs.

1. Studying deleted chapters. Polymers and Chemistry in Everyday Life feel like easy organic marks. They are not in the CUET 2027 syllabus. Confirm against the official NTA PDF.

2. Drawing full mechanisms. CUET asks which mechanism operates, not for the arrow-pushing. Learn the outcome and the reactivity order instead.

3. Skipping Biomolecules. It is short, factual, and worth three to four near-guaranteed questions. Students postpone it and then run out of time.

4. Practising from NEET or JEE banks. Those questions are multi-step. CUET 2027 rewards single-step NCERT recall, and NEET-level practice wastes your hours.

5. Ignoring NCERT in-text reactions. Several CUET questions come from boxed reactions and intext examples, not the back exercises.

6. Attempting all 50 without elimination. Negative marking punishes blind guessing. Read our time management tips for CUET aspirants before your next mock.

Decision Framework: Which Book Should You Use After NCERT?

Your Situation	Use This	Why
Scoring below 60% in organic mocks	NCERT only, twice	Your gaps are conceptual, not practice-related
Scoring 60–80%	NCERT + CUET-specific question bank	You need volume at the right difficulty
Scoring above 80%	Previous year papers + timed mocks	You need speed and accuracy, not new content
Preparing alongside NEET or JEE	NCERT + CUET PYQs only	Your concepts are ahead; align to the easier CUET 2027 pattern

There is no single best book for everyone. Match the resource to your current score, then return to these CUET Organic Chemistry Questions for a timed second pass. See the full CUET Chemistry books list and the CUET preparation books guide.

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Key Takeaways

• CUET Organic Chemistry Questions come from five units and contribute roughly 18–22 of the 50 questions in CUET Chemistry — the largest share of any section.

• Alcohols, Phenols and Ethers, plus Haloalkanes and Haloarenes, deserve your first two weeks.

• Practise CUET Organic Chemistry Questions at NCERT difficulty, not NEET difficulty.

• Guess only after eliminating two options, because of the −1 penalty in CUET 2027.

• Verify the syllabus and pattern for CUET 2027 against the official Information Bulletin on cuet.nta.nic.in when NTA releases it.

You May Also Find These Useful

Once you have worked through these CUET Organic Chemistry Questions, move to the resources below.

• How to Prepare for CUET Chemistry — the full subject strategy

• CUET Chemistry Syllabus 2027 — all 10 units and deleted topics

• CUET Previous Year Question Papers — solve the real thing

• CUET Subject List for Science Students — pick the right five subjects

• Science Colleges Accepting CUET Score — where your score can take you