LU B.Sc Sem 5 Chemistry Organic Chemistry-2 Important Questions 2026 | PYQ Pattern
LU B.Sc 5th Semester Chemistry (Organic Chemistry-2) Important Questions 2026 – Lucknow University (LU) aur affiliated colleges ke B.Sc NEP Semester V (PCM & ZBC group) students ke liye Chemistry – Organic Chemistry-2 ke sabse important questions, bilkul previous year question paper (PYQ) pattern me. Saare questions neeche page par hi hain – section-wise.
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Paper Details – B.Sc Sem 5 Chemistry (LU NEP 2026)
| University | University of Lucknow (LU) + affiliated colleges |
| Course | B.Sc. V Semester (NEP) – PCM & ZBC |
| Paper | Chemistry – Organic Chemistry-2 |
| Time / Marks | 2 Hours / 75 Marks |
| Pattern | Kul 4 questions: Section A se 1 (15 marks) + Section B se 3 (20 marks each) |
Section A – Important Questions (15 Marks)
Note: Section A se koi ek question attempt karna hai.
Q1. Write the products of: (a) C₆H₅CHO + NH₂OH → ? (b) CH₃COCH₃ + 3Br₂ + 4NaOH → ? (c) CH₃CH₂NH₂ + CHCl₃ + KOH (alc.) → ? [15 Marks]
Q2. Write the reaction, products and mechanism of: (a) Reimer–Tiemann reaction (b) Kolbe reaction (c) Cannizzaro reaction [15 Marks]
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Section B – Important Questions (20 Marks)
Note: Section B se koi teen questions attempt karne hain.
Q3. (a) Explain resonance stabilisation of the phenoxide ion and its effect on the acidity of phenol.
(b) How can primary, secondary and tertiary alcohols be distinguished? [20 Marks]
Q4. (a) How are phenols prepared from benzene diazonium chloride and chlorobenzene (Dow’s process)?
(b) Discuss the preparation of monohydric and dihydric alcohols. [20 Marks]
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Q5. (a) Give the mechanism of aldol condensation and the Etard reaction.
(b) How are hydrazones, semicarbazones, oximes and iodoform obtained from acetone? [20 Marks]
Q6. Explain the acidity of carboxylic acids using resonance of the carboxylate ion. Arrange F–CH₂–COOH, Cl–CH₂–COOH, Br–CH₂–COOH, I–CH₂–COOH, CH₃–COOH and CH₃–CH₂–COOH in increasing order of acidity. [20 Marks]
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Q7. (a) Explain rancidity, saponification value and iodine value of fats and oils.
(b) How do micelles help remove dirt? [20 Marks]
Q8. (a) Explain nucleophilic substitution in nitroarenes, taking p-chloronitrobenzene with aqueous NaOH.
(b) Arrange CH₃NH₂, (CH₃)₂NH, CH₃CH₂NH₂ and C₆H₅NH₂ in order of basicity. [20 Marks]
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Q9. Describe Hinsberg’s method of separating primary, secondary and tertiary amines. Give the action of HONO followed by NaOH on primary, secondary and tertiary nitroalkanes. [20 Marks]
Q10. (a) Classify α-amino acids by the nature of their side chains.
(b) What is denaturation of proteins? Give physical and chemical denaturants. [20 Marks]
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Exam Tips – Chemistry (Organic Chemistry-2)
- Section A ke long answers ke short notes bana lo – 15 marks pakke karo.
- Section B ke derivations / numericals / diagrams ki practice karo.
- Upar ke questions ko 2 ghante me PYQ ki tarah solve karke dekho.
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FAQs
LU B.Sc 5th Semester Chemistry (Organic Chemistry-2) exam me kitne questions attempt karne hote hain?
Ye 75 marks ka 2 ghante ka paper hai. Kul 4 questions attempt karne hote hain – Section A se 1 question (15 marks) aur Section B se 3 questions (20-20 marks).
Kya ye LU B.Sc Sem 5 Chemistry ka official previous year question paper (PYQ) hai?
Nahi. Ye LUUPDATE team ka banaya 2026 exam ke liye most important questions ka set hai, jo Lucknow University ke previous year papers ke pattern aur NEP syllabus par based hai.
B.Sc Sem 5 Chemistry Organic Chemistry-2 ke answers / solutions kahan milenge?
LUUPDATE ke Most Important Questions course (BA, B.Sc, B.Com Sem I, III & V) me har question ka pura solution milta hai – sirf ₹99 me, LUUPDATE App par.
Ye paper kis group ke liye hai – PCM ya ZBC?
Chemistry (Organic Chemistry-2) LU B.Sc NEP Semester V ke PCM & ZBC group ke students ke liye hai.
Disclaimer: Ye LUUPDATE team dwara taiyar kiye gaye expected important questions hain (previous year pattern par), Lucknow University ka official question paper nahi. Exam pattern aur syllabus ke liye university ka official notice zaroor dekhein.
