Solved question paper for Chem May-2025 (B-TECH 1st-2nd)

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Chemistry May-2025

PTU • B-TECH • Civil Engineering • 1st-2nd • May-2025

Chemistry previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for Chemistry, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for chemistry syllabus while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.

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Tech. (AE/ Al & ML/EEE/ CE/ CSE/ EE/ ECE/ IT/ ME/ Internet of Things and Cyber Security including Block Chain Technology) (Sem.-1,2) CHEMISTRY-I Subject Code : BTCH-101-18 M.Code : 75343 Date of Examination : 29-05-2025

Short Answer May-2025 • PTU B-TECH

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SECTION -B &C. have FOUR questions each.

Short Answer May-2025 • PTU B-TECH

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Dec 2024 SECTION -B&C have FOUR questions each.

Dec 2024 SECTION-Bac have FOUR questions each, ;

May 2023 SECTION - B & C have FOUR questions each, carrying EIGHT mark s each.

Dec 2023 SECTION -B & C. have FOUR questions each.

Dec 2023 SECTION -B & C have FOUR questions each.

Dec 2020 SECTION -B &C. have FOUR questions each.
Select at least TWO questions from SECTION -B &C.

Short Answer May-2025 • PTU B-TECH

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Dec 2024 Select atleast TWO questions from SECTION -B & C.

Dec 2024 Select atleast TWO questions from SECTION-B&C. . SECTION-A

Dec 2024 Select atleast TWo questions from SECTION -B 8 C. : - SECTION-A

Dec 2023 Select atleast TWO questions from SECTION-B&C.

Dec 2020 Select atleast TWO questions from SECTION -B &C.
Answer briefly :

Short Answer May-2025 • PTU B-TECH

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What are dipole-dipole interactions? Explain.

Short Answer May-2025 • PTU B-TECH

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May 2025 What are Van der Waals interactions, and how do they differ from ionic and dipolar interactions?

Dec 2024 What are ionic interactions, and how do they differ from dipolar interactions?
Give one example of hard and soft acid.

Short Answer May-2025 • PTU B-TECH

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Dec 2023 Give one example of Hard and soft acid each. 1|

Dec 2020 Give one example of Hard and soft acid each.
Why TMS is used as an internal standard.in NMR Spectroscopy?

Short Answer May-2025 • PTU B-TECH

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Dec 2020 Why is TMS used as an internal standard in NMR spectroscopy?
What is Dry corrosion? Explain.

Short Answer May-2025 • PTU B-TECH

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May 2025 What is corrosion? Discuss mechanism of dry corrosion.

May 2023 What is corrosion? Discuss mechanism of dry corrosion. (5)

What is Markownikof’s rule? Explain by giving example.

Short Answer May-2025 • PTU B-TECH

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Differentiate between lionization Isomerism and Hydrate Isomerism. ~ g. Which of the following will show IR spectrum? QO, N2, HI, CO?

Short Answer May-2025 • PTU B-TECH

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How is entropy related to free energy?

Short Answer May-2025 • PTU B-TECH

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Dec 2023 Write short notes on: (j) How is entropy related to free energy?
Calculate the bond order of O32 and O>". ‘

Short Answer May-2025 • PTU B-TECH

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What is absolute configuration? 1 | M-75343 (S1)- 1019 exams preparatory

Short Answer May-2025 • PTU B-TECH

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Draw the molecular orbital energy level diagram of CO molecule.

Short Answer May-2025 • PTU B-TECH

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Differentiate between n-type and p-type semiconductors.

Short Answer May-2025 • PTU B-TECH

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Discuss in detail Crystal field splitting in octahedral complexes,

Short Answer May-2025 • PTU B-TECH

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Dec 2024 Discuss the crystal field splitting in octahedral complexes.

Dec 2024 Discuss the crystal field splitting in octahedral complexes.

Dec 2023 a) Explain Crystal field splitting in octahedral complexes.

Dec 2023 a) Discuss in detail Crystal field splitting in octahedral complexes?

What is Aufbau Principle?

Short Answer May-2025 • PTU B-TECH

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Explain the process of Fluorescence and phosphorescence with the help of Jablonski diagram.

Short Answer May-2025 • PTU B-TECH

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Dec 2024 Explain the mechanism of fluorescence and phosphorescence by Jablonski diagram.

Dec 2024 Explain the mechanism of fluorescence and phosphorescence by Jablonski diagram.
Differentiate between scattering and diffraction.

Short Answer May-2025 • PTU B-TECH

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May 2023 What is the difference between diffraction and scattering? (2)

Dec 2023 c) Differentiate between Scattering and Diffraction.
Derive expression for the calculation of Ve, P. and T, in terms of van der waal's constant.

Short Answer May-2025 • PTU B-TECH

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Explain the deviation of real gases from ideal behavior.

Short Answer May-2025 • PTU B-TECH

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May 2025 b) How does the behavior of real gases deviate from ideal gas behavior at high pressure or low temperature?

Dec 2023 a) How and why do real gases deviate from ideality?
What is corrosion? Discuss mechanism of dry corrosion.

Short Answer May-2025 • PTU B-TECH

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May 2025 What is Dry corrosion? Explain.

May 2023 What is corrosion? Discuss mechanism of dry corrosion. (5)
Calculate tlie emf of the cell Zn/ Zn?" (0.001M) |hCu?*(0.1 M)/ Cu. The standard potential of Cu/Cu** half-cell is +0.34 V and Zn/Zn?" is 0.76 V.

Short Answer May-2025 • PTU B-TECH

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What is ionization energy? Which elements have the highest ionization energy? How ionization energy shows variation along the period and down the group?

Short Answer May-2025 • PTU B-TECH

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Dec 2024 What is ionization energy, and how does it vary across periods and groups in the periodic table?

Dec 2024 What is ionization energy, and how does it vary across periods and groups in the periodic table? 7

Dec 2023 a) What is ionization energy? Which elements have the highest ionization energy? How it shows variation along the period and down the group?

Dec 2020 What is ionization energy? Which elements have the highest ionization energy? (2)

What is the difference betwéen oxidation number and oxidation state?

Short Answer May-2025 • PTU B-TECH

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May 2023 What is the difference between oxidation number and oxidation state?

May 2023 What is the difference between oxidation number and oxidation state? (2)
Describe the conformational analysis of butane.

Short Answer May-2025 • PTU B-TECH

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Dec 2023 a) Describe the conformational analysis of butane.

Dec 2023 Discuss the conformational analysis of propane.
What is enantiomerism? Explain the requirement for enantiomerism.

Short Answer May-2025 • PTU B-TECH

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May 2025 What is the difference between enantiomers and diastereomers?

Dec 2024 b) What is chirality and explain why certain molecules are chiral?

Dec 2024 What is optical activity and how can it be used to distinguish between enantiomers?

Dec 2024 What are the differences between diastereoisomer and enantiomer?

Dec 2024 What are the differences between diastereoisomer and enantiomer?

Dec 2024 What is optical activity and how it can be used to distinguish between enantiomers?

Dec 2024 What is chirality and explain why certain molecules are Chiral?

Dec 2023 a)“ Define chirality. What are chiral molecules?

Dec 2023 Whatis diastereomerism? Explain by giving at Icast two examples.
Explain the following terms :

Short Answer May-2025 • PTU B-TECH

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Dec 2023 Explain the following terms with example :

Dec 2023 Define the following terms:

Dec 2023 Explain the following :

Dec 2020 Explain the following terms :

Elimination reaction with mechanism.

Short Answer May-2025 • PTU B-TECH

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Ring Cyclization reaction. ‘ NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student. 2 | M-75343 (S1) - 1019

Short Answer May-2025 • PTU B-TECH

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Write an original story which begins with : It was raining heavily and as i moved quickly towards the deserted building

Short Answer May-2025 • PTU B-TECH

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The Government of India is concerned about the steady increase in the outbreak of diseases among working class. In order to work on the possible solutions, the Health . Minister has asked the chief medical office, to find out the possible causes for these diseases, the problems faced and other related factors. On the basis of the following data, as CMO prepare a report to be submitted to Health Minister. Data showing diseases and the suffering people Sr.No. | Name of the Disease Percentage of people suffering ae ea Diabetes 25% Blood Pressure | 20% Cs 3 ds Stress ¥ wae SECT QE 3%

Short Answer May-2025 • PTU B-TECH

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Write a letter to the mawagercof the company mentioning details of your order and describing the damage.difid missing goods. Also write what you want the company to do for compensation.

Short Answer May-2025 • PTU B-TECH

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Write an essay in about 500 words on the topic S6¢ialmedia. NOTE : Disclosure of identity by writing mobile number or making passing request on any page of Answer sheet will lead to UMC case against the Student. 3 | M-45086 (S17) - 415

Short Answer May-2025 • PTU B-TECH

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01 Where can I find Chemistry previous year question papers for Bachelor of Technology, 1st-2nd semester?

This page lists Chemistry question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.

02 Are these official Punjab Technical University question papers?

BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.

03 How can previous year Chemistry papers help in exam preparation?

Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.

04 What kind of topics does Chemistry usually cover?

The question papers here relate to the official Chemistry syllabus set by the university for this course and semester.

05 Does this page include a Chemistry syllabus or solved answers?

This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.

06 Can I find papers for other subjects in the same Bachelor of Technology?

Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology.

Solved question paper for Chem May-2025 (B-TECH 1st-2nd)

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