Engineering Chemistry (BAS102) - AKTU Question Paper 2025-26
B.Tech · Semester 1 · Free PDF Download
This is the official AKTU Engineering Chemistry Previous Year Question Paper for B.Tech Semester 1, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 1
Session:2025-26
University:AKTU / UPTU
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Questions Asked in 2025-26
Engineering Chemistry (BAS102) — complete question paper · 70 marks · 3 Hours
Section AAttempt all questions in brief. 02 x 7 = 14
- aWhat are nano materials? How they are different from bulk materials?
- bWhat is fullerene? Explain its structure and one important application
- cWhat is Plaster of Paris (POP)? How is POP prepared from gypsum?
- dA solution having concentration 5 × 10⁻⁴ mol L⁻¹ shows an absorbance of 0.75 in a cell of path length 1 cm. Calculate the molar absorptivity (ε)
- eShow with the help of reactions, how scale formation can be prevented by Calgon conditioning?
- fExplain when will the value of G.C.V. = N.C.V.?
- gWhat are polymer blends? Give one example
Section BAttempt any three of the following: 07 x 3 = 21
- aWhat are Liquid Crystals? Describe the types of liquid crystals . Explain nematic, smectic, and cholesteric liquid crystals with suitable diagrams and examples
- bPredict and analyze the ¹H NMR spectra of the following compounds
- 2CH₃CH₂OH Explain the number of signals, splitting patterns (multiplicity), and integration for each type of proton
- cDescribe the construction and working of a Galvanic Cell . Calculate the equilibrium constant (K) at 25°C for the reaction: Given: E0 Fe3+/Fe2+ = 0.78 V and E0Ag+/Ag = 0.85 V
- dDefine the Higher Calorific Value (HCV) and Lower Calorific Value (LCV) of a fuel sample. In a bomb calorimeter experiment, the following data were obtained: Weight of coal = 0.896g, Weight of water in calorimeter = 2590g, Water equivalent of calorimeter = 3500g, Rise in temperature of water = 2.592°C, Cooling correction = 0.040°C, Acid correction = 50cal, Fuse wire correction = 20cal, If the fuel contains 6% hydrogen , calculate its LCV, assuming the latent heat of steam = 580 cal/g
- eDiscuss conducting polymers and biodegradable polymers with respect to their preparation, properties, and applications . Evaluate their importance in modern industry and environmental sustainability
Section CAttempt any one part of the following: 07 x 1 = 07
- aDraw and explain the molecular orbital energy level diagrams of homonuclear diatomic molecules such as N₂ and O₂. Predict their bond order and magnetic behavior
- bDescribe the synthesis of Paracetamol by the conventional method and by the green chemistry approach. Compare both methods highlighting the advantages of the green route
- aExplain the elementary idea of IR spectroscopy. Analyze how different functional groups are identified using IR spectra. Which of the following molecules will show IR absorption spectra and why? H₂, HCl, CO₂, H₂O, CH₄, N₂
- bAnalyze the basic principles of UV–Visible spectroscopy. Explain its simple applications in structural determination and quantitative analysis. Explain why 1,3-butadiene possesses a higher λmax value in UV–Visible spectroscopy compared to ethane
- aWith the help of a neat, well-labeled diagram, explain the of mechanism electrochemical (wet) corrosion of iron in: (i) neutral or alkaline medium (ii) acidic medium
- bExplain the hardening and setting process of cement. Discuss the chemical reactions involved, difference between initial and final setting, and factors affecting setting time
- aCompare ion exchange process with the zeolite process for water softening. Discuss advantages, limitations, and industrial relevance of each method
- bWrite the different chemical reactions taking place in soda-lime process. A sample of water on analysis give following result: Analysis of Raw water: Ca+2 = 80 mg/l; Mg+2 =24 mg/1, CO2 =33 mg/l, HCO-1 = 132 mg/1, H+ = 10 mg/l & NaCl 4.3 ppm, OH-1 = 34 mg/l. Calculate the Quantity of lime (74% pure) and soda (92% pure) needed for softening 50000 L of water
- aWhat are organo metallic compounds? Discuss the preparation of Grignard Reagent. Predict the final product obtained when C2H5MgBr reacts with (i)HCHO (ii)) CH3CHO (iii) (CH3)2 CO?
- bGive the preparation, properties, and uses of the following polymers
- 2Bakelite (Phenol-Formaldehyde resin)
- 3Nylon-6,6 (Polyamide) Explain their industrial significance and typical applications in daily life
- 2Bakelite (Phenol-Formaldehyde resin)
- 3Nylon-6,6 (Polyamide)
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
Repeated Questions — BAS102
Questions that appeared in more than one session, found by comparing 4 years of Engineering Chemistry papers (2022-23, 2023-24, 2024-25, 2025-26)
3x
What are organo metallic compounds? Discuss the preparation of Grignard Reagent. Predict the final product obtained when C2H5MgBr reacts with (i)HCHO (ii)) CH3CHO (iii) (CH3)2 CO?
Appeared in: 2022-23 · 2023-24 · 2025-26
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