Engineering Chemistry PYQ 2022-23 AKTU Question Paper

AKTU · BTECH · Semester 1, 2 · Engineering Chemistry · Session 2022-23 · PYQ

AKTU Engineering Chemistry previous year question paper 2022-23 for B.Tech Semester 1/2. Covers Atomic Structure, Advanced Materials and Green Chemistry…

Open the interactive reader to study this resource on AcademicArk.

Engineering Chemistry AKTU syllabus

  1. Unit 1: Atomic Structure, Advanced Materials and Green Chemistry
  2. Unit 2: Spectroscopic Techniques and Stereochemistry
  3. Unit 3: Electrochemistry, Batteries, Corrosion and Engineering Materials
  4. Unit 4: Water Technology and Fuels
  5. Unit 5: Polymers and Organometallic Compounds

Questions in Engineering Chemistry AKTU PYQ 2022-23

  1. Q1a. Draw the molecular energy level diagram for CO. Calculate its bond order and explain its magnetic behavior. (2 marks, 2022-23)
  2. Q1a. On the basis of MO theory calculate the bond order of NO. Will NO be paramagnetic or diamagnetic? (2 marks, 2022-23)
  3. Q1b. Predict the number of signals and their splitting patterns in 1H NMR of CH3CCl2CH3 and CH3OCH2CH3 (2 marks, 2022-23)
  4. Q1b. What are Chiral Drugs? Give examples of Chiral Drugs. (2 marks, 2022-23)
  5. Q1c. Two Isomers X and Y having molecular formula C3H6O give IR band near 3550 cm-1 and 1717 cm-1 respectively. Assign structural formula to X and Y consistent with their IR absorption band. (2 marks, 2022-23)
  6. Q1c. Give important applications of electrochemical series. (2 marks, 2022-23)
  7. Q1d. What is electrochemical series? What is the potential of a half cell consisting of zinc electrode in 0.01M ZnSO4 solution at 25°C. E°= 0.763V (2 marks, 2022-23)
  8. Q1d. A water sample is found to contain 40.5 mg/L Ca(HCO3)2; 14.6 mg/L Mg(HCO3)2; 22.2 mg/L CaCl2; 24 mg/L MgSO4 and 18mg/L NaCl. Calculate the temporary and permanent hardness of the water sample. (2 marks, 2022-23)
  9. Q1e. Differentiate between Gross and Net calorific value. (2 marks, 2022-23)
  10. Q1e. Discuss the preparation and uses of PTFE. (2 marks, 2022-23)
  11. Q1f. Discuss the preparation and uses of Nylon-6,6. (2 marks, 2022-23)
  12. Q1f. How does Gross Calorific Value differ from Net Calorific Value? (2 marks, 2022-23)
  13. Q1g. Give the structures of FOUR compounds used as initiators in Free Radical polymerization. (2 marks, 2022-23)
  14. Q1g. What are Chromophores and Auxochromes? Give examples. (2 marks, 2022-23)
  15. Q2a. Discuss the classification of liquid crystals. Distinguish between nematic and smectic liquid crystals. Give their important applications. (7 marks, 2022-23)
  16. Q2a. Describe different types of liquid crystals. Discuss the applications of Liquid crystals. (7 marks, 2022-23)
  17. Q2b. Asymmetrically substituted compounds having even number of cumulative double bonds exhibit optical isomerism whereas compounds having odd number of cumulative double bonds exhibit geometrical isomerism. Explain giving proper reasons. (7 marks, 2022-23)
  18. Q2b. What is Atropisomerism? Give five examples of compounds showing optical isomerism in the absence of chiral carbons. (7 marks, 2022-23)
  19. Q2c. Define Corrosion. How can corrosion be minimized by sacrificial anodic protection and impressed current cathodic protection methods? (7 marks, 2022-23)
  20. Q2c. Explain the setting and hardening of cement with relevant chemical reactions involved during the process. (7 marks, 2022-23)
  21. Q2d. Explain with the help of a neat labeled diagram the working of bomb calorimeter. A 0.85g sample of solid fuel was completely combusted in excess of oxygen using bomb calorimeter. The rise in temperature of water in calorimeter was 2.8℃. Calculate the HCV of the fuel, if water taken in calorimeter… (7 marks, 2022-23)
  22. Q2d. Explain the stages involved in production of biogas from cattle dung. Compare the impact of use of biogas and coal on the environment. (7 marks, 2022-23)
  23. Q2e. Predict the final product obtained when LiAlH4 reacts with: (i) CH3CHO (ii) CH3CN (iii) CH3COOC2H5 (iv) CH3COC2H5 (v) CH3COOH (vi) CH3N3 (vii) CH3CHCH2O (epoxide) (7 marks, 2022-23)
  24. Q2e. 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)2CO? (7 marks, 2022-23)
  25. Q3a. What are nanomaterials? How the physical and chemical properties of nanoparticles vary with their size? Write important applications of nanomaterials. (7 marks, 2022-23)
  26. Q3a. Describe the structure and applications of Graphite and Fullerenes. Explain the reasons for electrical and lubricating properties of graphite. (7 marks, 2022-23)
  27. Q3b. Write a brief note on fullerenes, discussing their preparation, properties and applications. (7 marks, 2022-23)
  28. Q3b. What are Carbon Nano Tubes? Discuss the applications of nanomaterials. (7 marks, 2022-23)
  29. Q4a. What is shielding and deshielding in NMR spectroscopy? A compound having molecular formula C4H9Br gave the following signals in its 1H NMR spectra: δ 1.04 (6H, d); δ 1.95 (1H, m); δ 3.33 (2H, d). Giving reasons assign the structures for the compound. (7 marks, 2022-23)
  30. Q4a. Why is TMS used as an internal standard in NMR spectroscopy? Two isomeric compounds A and B have molecular formula C10H14. The 1H NMR spectra of these isomers gave the following data: Isomer A: δ 1.30 (9H,s); δ 7.28 (5H, s). Isomer B: δ 0.88 (6H, d); δ 1.86 (1H, m); δ 2.45 (2H, d); δ 7.12 (5H, s).… (7 marks, 2022-23)
  31. Q4b. How do Auxochromes increase the coloring power of Chromophores? (i) A diene (molecular formula C4H6) shows an intense peak at λmax 217 nm while another diene (molecular formula C5H8) shows an intense peak at λmax 175 nm in their UV spectra. Giving proper explanation assign the structures to the… (7 marks, 2022-23)
  32. Q4b. (i) Explain the basic principle of IR Spectroscopy. What is the significance of Fingerprint region in IR spectroscopy? (ii) Identify the chromophoric groups present in cyclopentene, toluene, butanone and methanethiol in UV spectroscopy. (7 marks, 2022-23)
  33. Q5a. Discuss the mechanism of electrochemical corrosion of iron with evolution of hydrogen. What will happen if a zinc rod is vertically half submerged under water? (7 marks, 2022-23)
  34. Q5a. Discuss the mechanism of electrochemical theory of corrosion by absorption of oxygen. What effect will increased oxygen supply have on such corrosion? How can corrosion be minimized by proper design? (7 marks, 2022-23)
  35. Q5b. Discuss the construction and chemistry of charging/discharging of Lead Acid battery. (7 marks, 2022-23)
  36. Q5b. Discuss the differences between anodic and cathodic metallic coatings. Explain the processes of Galvanizing and Electroplating? What will happen if an iron ship travelling in the sea is attached through an insulated metallic wire to a small sheet of magnesium? (7 marks, 2022-23)
  37. Q6a. How are scales formed in boilers? Discuss four disadvantages of scale formation in boilers. The hardness of 10,000 litres of water sample was removed by passing it through a zeolite softener. The zeolite softener then required 200 litres of sodium chloride solution containing 200 g/L of NaCl for… (7 marks, 2022-23)
  38. Q6a. Explain the zeolite process of water softening. What are the advantages and limitations of this process? Calculate the amount of lime and soda required for the treatment of 10,000 litres of water whose analysis is as follows (in mg/L): Mg(HCO3)2=73; CaSO4=102; MgCl2=95; MgSO4=24; Ca(HCO3)2=121.5;… (7 marks, 2022-23)
  39. Q6b. Explain briefly the ultimate analysis of coal. A sample of fuel having following percentage composition C= 70%, H = 6%, O = 4%, N = 3%, S = 3%, ash = 6% and moisture = 8%. Calculate the quantity of air required for complete combustion of 1 Kg of fuel. (7 marks, 2022-23)
  40. Q6b. Explain the different parameters that are determined in the proximate analysis of coal. On burning 0.92g of a solid fuel in a bomb calorimeter, the temperature of 3300g of water increased by 2.42℃. Water equivalent of calorimeter and latent heat of steam are 385.0g and 587.0cal/g, respectively. If… (7 marks, 2022-23)

AKTU paper codes: BAS102, BAS202, KAS102, KAS202

Engineering Chemistry previous year papers

More Engineering Chemistry resources

More versions of this resource

Browse all notes · Semester 1 notes