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EndsemNov 20252019 patternFE

Engineering Chemistry SPPU Endsem Question Paper Nov 2025

All 9 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Engineering Chemistry questions
Subject code
107009
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2025
Max. marks
70
Time
2½ Hours
Semester
I/II
Paper code
[6581]-1904

Printed for: F.E.

Instructions to the candidates

  1. Question No.1 is compulsory. Solve Q.No.2 or Q.No.3, Q.No.4 or Q.No.5, Q.No.6 or Q.No.7, Q.No.8 or Q.No.9.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Use of logarithmic tables, slide rules, Mollier charts, Use of scientific calculator is allowed.
  5. Assume suitable data, if necessary.

Questions

  1. Q1

    1. Multiple Choice Questions. i) All the carbon atoms in Graphene are _____ hybridized.

      [1]
    2. a)

      This part has equations that don’t show as text. Open the PDF to read it.

    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [1]
    4. a)

      Biodegradable b) Composite

    5. c)

      Engg.Thermoplastic d) Liquid Crystal iii) Reinforcing agent used in a polymer matrix _____ .

      [1]
    6. a)

      Carbon fibre b) Glass fibre

    7. c)

      Aramid fibre d) All of these iv) Characteristics of a good fuel ______ .

      [1]
    8. a)

      High calorific value b) Moderate ignition temp

    9. c)

      Low Moisture content d) All of the above v) Boy’s calorimeter can be used to determine calorific value of _____

      [1]
    10. a)

      Solid fuel b) Volatile liq fuel

    11. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [1]
    12. a)

      This part has equations that don’t show as text. Open the PDF to read it.

    13. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [1]
    14. a)

      NaCl, KOH b) NaCl, KBr

    15. c)

      NaOH, KBr d) NaOH, KOH viii) According to Lamberts law, absorbance of the solution is proportional to _______ provided that _____ of solution remains constant.

      [1]
    16. a)

      Conc and pathlength b) Pathlength and conc

    17. c)

      Conc and pH d) Pathlength and pH ix) Corrosion between the dissimilar metals is called ______ .

      [1]
    18. a)

      Galvanic corrosion b) Dry corrosion

      Also asked:May 2024

    19. c)

      Oxidation corrosion d) Conc. cell corrosion x) Copper forms _____ film.

      [1]
    20. a)

      Non-porous b) Porous

    21. c)

      Volatile d) Unstable

  2. Q2

    1. a)

      Define conducting polymer. What is the structural requirements for a polymer to show conductive property? Give doping reactions, two properties and two applications of conducting polymer.

      Also asked:Apr 2025 ·Apr 2025

      [6]
    2. b)

      Define Nanomaterial. Explain classification of nanomaterial based on dimension with example.

      [5]
    3. c)

      Give the structure, two properties and two applications of polycarbonate.

      Also asked:Nov 2025 ·May 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [4]

  3. Q3

    1. a)

      What are Carbon Nano Tubes? Discuss the different types of CNTs with respect to their structure. Give any two applications.

      Also asked:May 2025 ·Apr 2025 ·Apr 2025 ·Nov 2023

      [6]
    2. b)

      What is biodegradable polymer? Explain the favourable conditions for biodegradation give any two applications of biodegradable polymer.

      [5]
    3. c)

      What are quantum dots? Give any two types of quantum dots. Write any two applications of quantum dots.

      Also asked:Nov 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024

      [4]

  4. Q4

    1. a)

      Give the principle and explain the process of fractional distillation of crude oil with labelled diagram. Give the composition and boiling range of any one fraction obtained during refining.

      Also asked:May 2024

      [6]
    2. b)

      What is Power Alcohol? Give the method of preparation with reactions involved of ethanol from molasses. State any two advantages of Power Alcohol.

      Also asked:Apr 2025 ·Apr 2025 ·May 2024

      [5]
    3. c)

      1.1 g coal containing 7% H was combusted in a Bomb Calorimeter. The amount of water in the calorimeter was 1050g and water equivalent of the calorimeter = 200g. Rise in temp of surrounding water was 3.65ºC. The corrections are as follows: Acid correction = 55cal, Fuse wire correction = 15cal and cooling correction = 0.015ºC. Calculate GCV and NCV of coal. 3

      [4]

  5. Q5

    1. a)

      Explain the production of hydrogen by steam reforming of methane and coke with reaction conditions and removal of CO 2 .

      Also asked:Nov 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [6]
    2. b)

      What is Biodiesel? Give preparation reaction of biodiesel with reaction conditions give advantages and limitations of biodiesel.

      [5]
    3. c)

      2.00g of coal sample was heated for one hour at 110ºc, the weight of the residue was 1.80g.The residue was then covered with a vented lid and heated for exactly 7 minutes at 950ºC. The residue weighed 1.00g. The crucible was then heated without lid till a constant weight of the residue of 0.15g was obtained. Calculate % of the various constituents of coal.

      [4]

  6. Q6

    1. a)

      Explain block diagram of single beam of UV-vis spectrophotometer. Explain its four components and give their function.

      Also asked:Apr 2025 ·Apr 2025

      [6]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [5]
    3. c)

      Define the following: i) Beers law ii) Chromophore iii) Auxochrome iv) Bathochromic shift OR

      Also asked:May 2024

      [4]

  7. Q7

    1. a)

      Give principle of IR spectroscopy. Explain modes of vibrations with stretching and bending vibrations.

      [6]
    2. b)

      Explain the possible electronic transitions with diagram which occur on absorption of UV. vis radiations by an org. molecule.

      [5]
    3. c)

      Explain any four applications of IR spectroscopy.

      [4]

  8. Q8

    1. a)

      Define corrosion. State the conditions under which wet corrosion occurs. Explain hydrogen evolution mechanism of wet corrosion.

      Also asked:Nov 2025 ·May 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [6]
    2. b)

      What is the principle of cathodic protection? Explain any one method.

      Also asked:Nov 2023

      [5]
    3. c)

      Explain any four factors affecting the rate of corrosion related to metal.

      Also asked:May 2025 ·May 2024 ·Nov 2023

      [4]

  9. Q9

    1. a)

      Define Electroplating. Explain the process with diagram and reactions. Give any two applications of electroplating.

      Also asked:Nov 2023

      [6]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [5]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [4]