Skip to content
EndsemNov 20232019 patternFE

Engineering Chemistry SPPU Endsem Question Paper Nov 2023

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 2023
Max. marks
70
Time
2½ Hours
Semester
I/II
Paper code
[6178]-3

Printed for: F.E.

Instructions to the candidates

  1. Q. 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. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable data, if necessary.
  5. Use of logritmic tables slide rule, Mollier electronic pocket calculator and stem tables is allowed.

Questions

  1. Q1

    1. Multiple Choice Questions :

    2. a)

      Which of the following is used for p-doping in conducting polymers? i) Lithium ii) Iodine iii) Sodium iv) Calcium

      [1]
    3. b)

      Electroluminescent polymers are used in _________. i) LED ii) Sutures iii) Safety goggles iv) Rechargable batteries

      [1]
    4. c)

      Which among the following is an example of quantum dots? i) Se ii) K iii) CdSe iv) AsF 5

      [1]
    5. d)

      Unit of calorific value for solid fuel is __________. i) Kcal/m 3 ii) cal/g iii) Joules iv) J/m 3

      [1]
    6. e)

      The enzyme used for conversion of glucose to ethanol is ________. i) lactase ii) maltase iii) invertase iv) zymase

      [1]
    7. f)

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

      [1]
    8. g)

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

      [1]
    9. h)

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

      [1]

  2. Q2

    1. a)

      Discuss three important factors responsible for biodegradation of polymers. Draw the structure of PHBV and give its two applications.

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

      [6]
    2. b)

      Explain structure of graphene with diagram. Mention its four applications.

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

      [5]
    3. c)

      How are nanomaterials classified on basis of dimensions? Give example of each type.

      Also asked:May 2024

      [4]

  3. Q3

    1. a)

      Discuss the different types of carbon nanotubes w.r.t. their structure. Give any two applications of CNT.

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

      [6]
    2. b)

      Classify polymer composites on the basis of reinforcement. Give two properties and two applications of polymer composites.

      [5]
    3. c)

      Give the structure of polycarbonate. Mention its three properties and three applications.

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

      [4]

  4. Q4

    1. a)

      Discuss the construction and working of Bomb colorimeter with diagram for determination of GCV of fuel. State the formula (without corrections) to calculate GCV.

      Also asked:Apr 2025 ·Apr 2025

      [6]
    2. b)

      Give the preparation reaction of biodiesel. Give its four advantages and two disadvantages.

      [5]
    3. c)

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

      [4]

  5. Q5

    1. a)

      State the principle and explain the process of fractional distillation of petroleum with diagram. Give the composition, boiling range and application of any one fraction obtained.

      [6]
    2. b)

      Explain production of hydrogen by steam reforming of methane and coke with reaction conditions.

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

      [5]
    3. c)

      1.0 g of coal sample was heated for 1 hr. at 105-110°C, weight of the residue obtained was 0.9 g. The crucible was then heated without lid till a constant weight of 0.15 g was obtained. In an another experiment, 1.0g of the same coal sample was taken in a crucible with a vented lid and heated at 925°C for 7 minutes. The weight of the residue was 0.55 g. Calculate % moisture, % volatile matter, % ash and % fixed carbon.

      [4]

  6. Q6

    1. a)

      What are the conditions of absorption of IR radiations by molecules? Explain the fundamental modes of bending vibrations.

      Also asked:May 2025

      [6]
    2. b)

      Discuss any five applications of UV-vis spectroscopy.

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

      [5]
    3. c)

      Define : i) Hypochromic shift ii) Chromophore iii) Red shift iv) Blue shift

      [4]

  7. Q7

    1. a)

      Explain the different types of electronic transitions with diagram which occur on absorption of UV-vis radiations by an organic molecule. State the forbidden transitions.

      Also asked:May 2024

      [6]
    2. b)

      Draw block diagram of IR spectrophotometer. Explain and give function of its four components.

      Also asked:May 2025

      [5]
    3. c)

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

      [4]

  8. Q8

    1. a)

      Give the reaction involved and mention the type of oxide film formed on the oxidation corrosion of Na, Mg, Cr, Mo.

      [6]
    2. b)

      What is electroplating? Explain the process with diagram and reactions involved. Give any two applications of electroplating.

      Also asked:Nov 2025

      [5]
    3. c)

      Define cathodic and anodic coatings. Which are better and why?

      [4]

  9. Q9

    1. a)

      Explain hydrogen evolution and oxygen absorption mechanisms of wet corrosion.

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

      [6]
    2. b)

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

      Also asked:Nov 2025 ·May 2025 ·May 2024

      [5]
    3. c)

      Give the principle of cathodic protection. Explain any one method of cathodic protection. 

      Also asked:Nov 2025

      [4]