Previous Year Very Short Questions of CHEMISTRY (B-TECH electronics and communication engineering 1st-2nd)

Engineering chemistry

Previous year question paper with solutions for Engineering chemistry

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  1. What do you understand by spectroscopy?
  2. What do you understand by natural linewidth of a spectral line?
  3. What are the advantages of gaseous fuels?
  4. What is waterline corrosion?
  5. What are third generation petrochemicals?
  6. Explain nanochemistry.
  7. Give two examples of photochemical reactions having high quantum yield.
  8. λmax for two isomers (cis- and trans-) of stilbene (C6H5CH=CHC6H5) are 274 and 294 nm. Which isomer will have λmax of 294 nm? Explain.
  9. What is the usefulness of TMS as an internal standard?
  10. What are composite materials? Name two natural composites.
  11. What is saline water?
  12. Give the cause of corrosion.
  13. Name the two phases of chromatography.
  14. What are indicators? Give examples.
  15. Give the full name of MASERS and LASERS.
  16. What is ultraviolet and visible spectroscopy known as?
  17. What is NMR and MRS?
  18. What is a phase and a component?
  19. Give no of signals in Benzene and Nitrobenzene.
  20. Calculate the value of Einstein of energy in electron volts for radiation of frequency 3�1015.
  21. Define quantum yield.
  22. What is the basic principle of Chromatography? Give various types of liquid chromatography.
  23. How will distinguish chemically between soft and hard water?
  24. Despite of the involvement of radiations & matter in both, what are the differences between spectroscopy and photochemistry?
  25. How is supercooled water an example of metastable equilibrium?
  26. Write a note on photochemistry.
  27. Give the number of components, number of phases & number of degrees of freedom in a 9M aqueous solution of sulphuric acid (partly dissociated into hydrogen, bisulphite and sulphate ions) at 1 atm.
  28. What is conductivity water? Give its uses.
  29. Why should the presence of CO2 be avoided in boiler feed water?
  30. What do you understand by number average molecular weight of polymer?
  31. What are petrochemicals? What are the primary raw materials for petrochemicals?
  32. Methanol is a good solvent for UV but not for IR studies. Why?
  33. Explain phosphorescence.
  34. What are ionic liquids?
  35. What do you understand by functionality in polymer chemistry?
  36. Define nanoscience.
  37. Distinguish between priming and forming.
  38. Compare dry and wet corrosion.
  39. Why the water is soften before using in boiler?
  40. Why rusting of iron in saline water is quicker than ordinary water?
  41. What is the basic principle of chromatographic techniques?
  42. What is the difference between specific conductance and equivalent conductance?
  43. Distinguish between Thermal and Photochemical Reactions.
  44. Define Syndiotactic Polymers.
  45. What is Chemical shift in NMR?
  46. What is Frank-Condon principle?
  47. Determine the number of components, number of phase and degree of freedom on the following equilibrium :(i) N2O4(g) ⇌ 2NO2(g) (ii) NH4Cl(s) ⇌ NH3(g) + HCl(g) When P(NH3) ⇌ P(HCl)
  48. Calculate the number of vibrational degrees of freedom in CO2 and SO2.
  49. Distinguish between photo physical and photochemical process.
  50. What are Optical Sensors?
  51. Differentiate between Scale and Sludge.
  52. What do you mean by Anodic Sacrificial Protection?
  53. CO2 should not be present in boiler feed water. Why?
  54. What are atactic polymers?
  55. Which of the following will exhibit infrared spectra and why? N2, HCl, O2, CO2.
  56. What are Reinforced Composite Materials?
  57. What are Coercing Colloids?