Engineering Chemistry SPPU Endsem Question Paper Nov 2025 (paper 2)
All 11 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Pattern
- 2024 pattern
- Exam
- Endsem
- Session
- Nov 2025
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- I
- Paper code
- [6351]-113
Printed for: F.E.
Instructions to the candidates
- Q.1 is compulsory.
- Solve Q.2 or Q.3, Q.4 or Q.5, Q.6 or Q.7, Q.8 or Q.9, Q.10 or Q.11.
Questions
Q1
- [10]
Multiple Choice Questions.
- a)
The colour of Metal -EDTA complex is ______ i) blue ii) wine red iii) pink iv) colourless
Also asked:Nov 2024
- b)
The process of removing salts from brackish water is _____ i) desalination ii) degasification iii) distillation iv) degradation
Also asked:Nov 2024
- c)
This part has equations that don’t show as text. Open the PDF to read it.
- d)
In conductometric titration between strong acid and strong base reaction, the conductance of the solution ______ i) decreases upto endpoint & then increases ii) increases upto endpoint & then decreases iii) increases upto endpoint & then remains constant iv) decreases upto end point & then remains constant
Also asked:Nov 2024
- e)
Polymers that do not become soft on heating & hard on cooling are ______ i) thermoplastic polymers ii) thermosetting polymers iii) thermoelastic polymers iv) thermotropic polymers 2
Also asked:Nov 2024
- f)
Graphene is ______ nanomaterial. i) zero dimensional ii) one dimensional iii) two dimensional iv) three dimensional
Also asked:Nov 2024
- g)
This part has equations that don’t show as text. Open the PDF to read it.
- h)
This part has equations that don’t show as text. Open the PDF to read it.
Q2
- a)[6]
What are scales & sludges? Explain the causes of scale formation in boiler.
- b)[3]
Explain reverse osmosis process with figure.
- c)[3]
The hardness of 50,000 litres of a water sample was removed by passing it through a zeolite softener. The softener required 250 litres of NaCl containing 100 gm/lit of NaCl for regeneration. Calculate hardness of water.
OR- a)
Q3
- a)[6]
What is hardness of water? Explain the procedure of EDTA method for determination of total hardness. Give formula for total hardness and reactions involved.
- b)[3]
Give cation & anion exchange reaction for deionisation of water containing MgCl 2 .
Also asked:Nov 2024
- c)[3]
100 ml of water sample on titration with N/50 HCl required 7.6 ml for phenolphthalein end point & 15.2ml for total alkalinity reading. Identify type & amount of alkalinity present in water sample. 3
Also asked:Nov 2024
- a)
Q4
- a)[6]
State Beer’s law and Lambert’s law. Draw diagram of double beam spectrophotometer & state the function of any 2 components of spectrophotometer.
Also asked:Nov 2024
- b)[3]
Draw a labelled diagram of calomel electrode. Write its cell representation & give anyn 2 disadvantages.
Also asked:Nov 2024
- c)[3]
Define:- i) Specific conductance ii) Motar conductance iii) Cell constant
Also asked:Oct 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·Oct 2024 ·Oct 2023
OR- a)
Q5
- a)[6]
Explain various stages of pH metric titration for strong acid and strong base with titration curve and reaction involved init. Give any 2 applications of pH metry.
- b)[3]
Explain any 3 applications of conductometry.
- c)[3]
Define:- i) Auxochrome ii) Hypso chromic shift iii) Hyper chromic shift
Also asked:Nov 2024
- a)
Q6
- a)[6]
What are bio degradable polymers? Explain factors responsible for bio degradation. Draw structure of (biopol) PHBV & give its 2 applications.
Also asked:Nov 2024
- b)[3]
This part has equations that don’t show as text. Open the PDF to read it.
- c)[3]
What are quantum dots? Give any 2 types of quantum dots. Write any 2 applications of it.
OR- a)
Q7
- a)[6]
Explain structure of graphene with diagram. Give its 3 properties and 3 applications.
Also asked:Nov 2025 ·May 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023
- b)[3]
What are nanomaterials? Classify it on the basis of zero and one dimensional with respect to example of each.
Also asked:Nov 2024
- c)[3]
Define conducting polymers. Explain p-doping with reaction. 4
- a)
Q8
- a)[6]
What is proximate Analysis? Explain the procedure with formula used for determination of various constituents.
Also asked:Nov 2024
- b)[3]
What are Li ion batteries? Explain its construction.
Also asked:Nov 2024
- c)[3]
The following observations were noted in Boy’s gas calorimeter experiment- Volume of gas burnt at STP = 0.1 m 3 , Mass of cooling water used = 27kg, Temperature of inlet & outlet water are 24ºC & 29ºC respectively. Mass of steam condensed = 0.04kg Find GCV and NCV of the fuel
OR- a)
Q9
- a)[6]
Explain production of hydrogen gas by steam reforming of methane & coke with reaction conditions & method for removal of CO 2 gas.
Also asked:Nov 2025 ·Apr 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023
- b)[3]
Give preparation with reaction of power alcohol.
Also asked:Nov 2024
- c)[3]
This part has equations that don’t show as text. Open the PDF to read it.
- a)
Q10
- a)[6]
What is wet corrosion? Give 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
- b)[3]
i) Explain any 3 factors affecting rate of corrosion with respect to nature of metal. ii) What are anodic & cathodic coatings? Which is better? [3]
Also asked:Nov 2024
OR- a)
Q11
- a)[6]
Explain cathodic protection method using sacrificial anode with figure. Give any 2 advantages & any 2 applications of it.
- b)[3]
This part has equations that don’t show as text. Open the PDF to read it.
- a)