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EndsemMay 20242019 patternFE

Engineering Chemistry SPPU Endsem Question Paper May 2024

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
May 2024
Max. marks
70
Time
2½ Hours
Semester
I/II
Paper code
[6260]-4

Printed for: F.E.

Instructions to the candidates

  1. Question No. 1 is compulsory.
  2. Solve any one of Q2 or Q3, Q4 or Q5, Q6 or Q7, Q8 or Q9.
  3. Neat diagrams must be drawn wherever necessary.
  4. Figures to the right indicate full marks.
  5. Use of logarithmic table slide rule, mollar charts, electronic pocket calculator and steam tubles is allowed.
  6. Assume Suitable data, if necessary.

Questions

  1. Q1

    1. Multiple Choice Questions : i) CDs, DVDs can be mode from -

      [10]
    2. a)

      Polycarbonate b) Polypropylene

    3. c)

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

    4. a)

      Fibers b) Particulars

    5. c)

      Polymer d) Flakes iii) Which of the following is used for N-doping in conducting polymers -

    6. a)

      Iodine b) Chloride

    7. c)

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

    8. a)

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

    9. c)

      0.9H d) 0.09H v) Cooling correction should be _______ during calculation of GCV of a fuel by bomb calorimeter, correctly

    10. a)

      added b) subtracted

    11. c)

      multiplied d) neglected vi) According to lambert’s law

    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.

    14. a)

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

    15. c)

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

    16. a)

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

    17. c)

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

    18. a)

      Decrease

    19. b)

      Increase

    20. c)

      Remain same

    21. d)

      Initially increase and then remain constant x) Corrosion between the dissimilar metal is called as -

    22. a)

      Galvanic corrosion b) Dry corrosion

      Also asked:Nov 2025

    23. c)

      Concentration corrosion d) Oxidation corrosion

  2. Q2

    1. a)

      What are biodegradable polymer. Explain three factors responsible for biodegradation. Give the structure of PHBV and its application.

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

      [6]
    2. b)

      Define nanomaterials. How are nanomaterial classified on the basis of dimension? Give example of each.

      Also asked:Nov 2023

      [5]
    3. c)

      What are Quantum dots? Give properties and application of quantum dots.

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

      [4]

  3. Q3

    1. a)

      What is conducting polymer? Explain intrinsically and extrinsically conducting polymer with example. how the conductivity of trans polyacetylene can be improved?

      [6]
    2. b)

      Explain structure of graphene with diagram. Give its four application.

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

      [5]
    3. c)

      Give structure, properties and applications of PPV as an electroluminiscent polymer.

      [4]

  4. Q4

    1. a)

      Explain steam reforming of coke and methane with reaction conditions for industrial production of hydrogen. Give process of CO 2 removal.

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

      [6]
    2. b)

      Give the principle of fractional distilation of petroleum crude with diagram. Write composition and boiling range and use of any one fraction obtained during refining of petroleum.

      Also asked:Nov 2025

      [5]
    3. c)

      The following observations were noted in the Boy’s gas calorimeter experiments - Valume of gas burnt at STP = 0.15 m 3 Mass of cooling water used = 27 kg Temperature of Inlet water = 24.1 ° C Temperature of outlet water = 29.8 ° C Mass of steam condensed = 0.04 kg Find GCV and NCV of the fuel

      Also asked:Nov 2025 ·Nov 2024

      [4]

  5. Q5

    1. a)

      Draw net labeled diagram with principle of Bomb calorimeter. Give construction and working of Bomb calorimeter to determine GCV of a fuel. State the formula of GCV.

      [6]
    2. b)

      What is power Alcohol. Give procedure for preparation of ethanol with reaction. Give any two advantages of power alcohol.

      Also asked:Nov 2025 ·Apr 2025 ·Apr 2025

      [5]
    3. c)

      A sample of coal was analysed as follows - Exactly 1.50 gm coal sample was heated for 1 hr at 105–110 ° C, the residue weight 1.435 gm. The crucible next was covered with a vented lid and strongly heated for exactly 7 min at 950 ° + 20 ° C. The residue weight 1.027 gm. The crucible was then heated without cover, until a constant weight was obtained. The last residue was found to weight 0.117 gm. Calculate the percentage results of above analysis.

      [4]

  6. Q6

    1. a)

      Give the principle of IR spectrophotometer with help of block diagram. Explain any four application of IR spectroscopy.

      [6]
    2. b)

      Explain mode of vibration with stretching and bending vibrations.

      [5]
    3. c)

      Define - i) Hypochromic shift ii) Bathochromic shift iii) Beer’s law iv) Chromophore

      Also asked:Nov 2025

      [4]

  7. Q7

    1. a)

      Explain different types of electronic transitions with diagram which occurs an absorption of uv-visible radiations by an organic molecule. State the forbidden transition.

      Also asked:Nov 2023

      [6]
    2. b)

      Give any five application of uv–visible spectroscopy.

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

      [5]
    3. c)

      What are conditions of absorption of IR radiations by the molecule.

      [4]

  8. Q8

    1. a)

      Explain Hydrogen evolution and oxygen absorption mechanism of wet corrosion.

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

      [6]
    2. b)

      Explain cathodic protection method using sacrificial anode with respect to principle diagram, method and applications.

      Also asked:May 2025

      [5]
    3. c)

      Discuss any four factors w.r.t. nature of metal affecting rate of corrosion.

      Also asked:Nov 2025 ·May 2025 ·Nov 2023

      [4]

  9. Q9

    1. a)

      State the pilling-Bedworth Ratio with their significance. Give reaction involved and mention the type of oxide film formed on the oxidation corrosion of Fe, Al, Ag and Mo.

      [6]
    2. b)

      What is galvanization? Explain process with diagram. Give any two application of galvanization.

      [5]
    3. c)

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

      [4]