Engineering Chemistry (BAS202) - AKTU Question Paper 2023-24
B.Tech · Semester 2 · Free PDF Download
This is the official AKTU Engineering Chemistry Previous Year Question Paper for B.Tech Semester 2, academic session 2023-24. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 2
Session:2023-24
University:AKTU / UPTU
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Questions Asked in 2023-24
Engineering Chemistry (BAS202) — extracted question text · 70 marks · 3 Hours
Section AAttempt all questions in brief. 2 x 7 = 14
- aCompare and arrange the following in the increasing order of stability: O2, O2+, O2
- bHow nanomaterials are different from bulk materials?
- cWhat is the selection rule for the molecule to show NMR spectrum?
- dExplain, which one will exhibit higher value of λ max in UV/Visible spectra of CH3COCH3 and CH2=CHCOCH3
- eCalculate the EMF of the Daniel cell at 25°C when the concentration of ZnSO 4 and CuSO4 are 0.001M and 0.01M respectively. The standard potential of the cell is 1.1 Volt
- fShow with the help of reactions, how scale formation can be prevented by Calgon conditioning?
- gClassify polymers on the basis of tacticity (stereochemistry)
Section BAttempt any three of the following: 7 x 3 = 21
- aWhat are the Anisotropic crystals? How it is classified on the b asis of temperature? Also give important applications
- bExplain the Absorption and Intensity shift in the UV spectroscopy and support with examples. Illustrate, the effect of polar and non-polar solvent on π - π* transition in acetone?
- cExplain the mechanism of Hydrogen evolution and Oxygen absorption with the help of electrochemical theory of corrosion. Explain noble and sacrificial metallic coatings for preventing corrosion
- dIllustrate the principle and working of the Zeolite process. A zeolite softener was regenerated by passing 50L of NaCl solution having strength of 40% of NaCl. Calculate the hardness of water if 10000L of hard water was softened by using this zeolite
- eIllustrate the preparation of Grignard Reagents and predict the final product obtained when C2H5MgBr react with (i) HCHO (ii) CH3CHO (iii) (CH3)2CO
Section CAttempt any one part of the following: 7 x 1 = 7
- aDraw the molecular orbital diagram of NO and N 2 molecules. Calculate their bond order and predicts their magnetic behavior
- bDiscuss any FOUR principles of Green Chemistry. Explain the conventional and Green route synthesis of paracetamol
- aComment on any TWO of the following: (i) Lambert- Beer’s Law (ii) Molecular vibration (iii)Shielding and de - shielding effect
- b(i)Why Tetra Methyl Silane is used as an internal indicator in NMR spectroscopy? A compound have molecular formula C10H14. The H1 NMR spectra of the molecule gave the following data: A: δ 1.30 (9H, singlet); δ 7.28 (5H, singlet) Giving reasons deduce the structures for the molecule. A: δ 1.30 (9H, singlet); δ 7.28 (5H, singlet) (ii)How many NMR signals are expected in the NMR spectra of ethanol in aqueous condition? Explain their splitting
- aDifferentiate between primary and Secondary batteries? Discuss the various reactions involve during the charging and discharging of lead storage battery
- bDescribe the various steps involved during Portland cement manufacture by rotary kiln method. Explain the setting and hardening of cement with relevant chemical reactions involved
- aExplain the principle of water softening by lime – soda process. Calculate the amount lime and soda required for 100,000 L of water containing the following salt: Mg 2+= 48 ppm, Ca 2+ = 120ppm, FeSO4.7H2O = 139 ppm, CO2=88ppm, NaNO3 = 8.9ppm, HCO3- = 122 ppm
- bWith the help of a neat diagram, explain the working of Bomb calorimeter. A sample of coal contain C=91%, H=6%, N=2% and ash=1%. The following data were obtained when the above coal was tested in bomb calorimeter: Weight of coal burnt= 0.97 g Weight of water taken= 800 g Water equivalent of bomb and calorimeter= 2100 g Rise in temperature= 2.48˚C Fuse wire correction = 12.0 cal Acid correction= 58.0 cal Cooling correction= 0.015 ˚C Assuming that the latent heat of condensation of steam as 587cal/g, Calculate gross and net calorific values of the coal
- aGive preparation, properties and applications of following polymer: (i) Neoprene (ii) Terylene (iii) Nylon 6,6
- bClassify the conducting polymers and explain its different types also. Mention its applications also
Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.
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