Solved question paper for Chem Dec-2020 (B-TECH 1st-2nd)

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Chemistry Dec-2020

PTU • B-TECH • Civil Engineering • 1st-2nd • Dec-2020

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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SECTION -B &C. have FOUR questions each.

Short Answer Dec-2020 • PTU B-TECH

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May 2025 SECTION -B &C. have FOUR questions each.

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

Short Answer Dec-2020 • PTU B-TECH

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May 2025 Select at least TWO questions from SECTION -B &C.

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.
Which have high melting point and why ; HgCl, or CaCh

Short Answer Dec-2020 • PTU B-TECH

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Why is TMS used as an internal standard in NMR spectroscopy?

Short Answer Dec-2020 • PTU B-TECH

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May 2025 Why TMS is used as an internal standard.in NMR Spectroscopy?

Define e.m.f. of cell.

Short Answer Dec-2020 • PTU B-TECH

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Write down the equation of state of real gas.

Short Answer Dec-2020 • PTU B-TECH

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Give cis and trans notation to the following : HN, ye Cl. jt

Short Answer Dec-2020 • PTU B-TECH

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Jere ii) pore H,C OH Br D

Short Answer Dec-2020 • PTU B-TECH

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How do you explain anomalous electronic configuration of Cu (4s! 3d!)

Short Answer Dec-2020 • PTU B-TECH

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Can oxidation state be negative? Discuss. 1 | M-75343 (S1)-734

Short Answer Dec-2020 • PTU B-TECH

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Give one example of Hard and soft acid each.

Short Answer Dec-2020 • PTU B-TECH

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May 2025 Give one example of hard and soft acid.

Dec 2023 Give one example of Hard and soft acid each. 1|
What is isomerism?

Short Answer Dec-2020 • PTU B-TECH

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Fora cell reaction A(s) + 2B (aq) > A2+ (aq) + 2B (s) at 298 K, the equilibrium constant is 1.0 « 10°, Calculate E® cell.

Short Answer Dec-2020 • PTU B-TECH

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Solve the Schrodinger wave equation for particle in one-dimensional box. (6)

Short Answer Dec-2020 • PTU B-TECH

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Dec 2024 b) Give the solution to the Schrodinger equation for a particle in a one-dimensional box.

Dec 2024 Derive the Schrodinger wave equation for a particle in one dimension box.

Dec 2024 Derive the Schrodinger wave equation for a particle in one dimension box.

Dec 2024 Give the Solution to the Schrodinger equation for a particle ina one-dimensional box. |

Dec 2023 a) Discuss the Schrodinger wave equation for particle in one dimensional box and relate important results from it.
Give the physical meaning of wave function. (2)

Short Answer Dec-2020 • PTU B-TECH

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May 2023 Give the significance of wave function. (2)
What is crystal field theory? How does this theory account for the fact that [CoF.}* is paramagnetic but [Co(NH3)6]*” is diamagnetic though both are octahedral.

Short Answer Dec-2020 • PTU B-TECH

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What are vander Waals forces? Discuss them briefly. (5)

Short Answer Dec-2020 • PTU B-TECH

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Dec 2023 a) What are van der Waals forces? Discuss them briefly.
The vander Waals constants of a gas are: a=0.751 dm® atm mol” and b=0.0226 dm* mol’ Calculate critical constants. (3)

Short Answer Dec-2020 • PTU B-TECH

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Explain Principles of UV-Vis Spectroscopy. How do you distinguish between different types of transitions involved in UV-Vis spectroscopy? (5)

Short Answer Dec-2020 • PTU B-TECH

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On the basis of IR spectroscopy, how can you distinguish between the following: (3)

Short Answer Dec-2020 • PTU B-TECH

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Alkane, alkene and alkyne

Short Answer Dec-2020 • PTU B-TECH

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Aldehyde and ketone

Short Answer Dec-2020 • PTU B-TECH

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Derive Nemst equation. (4)

Short Answer Dec-2020 • PTU B-TECH

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Calculate the mean ionic activity co-efficients of 0.1 mol/kg HC1, given the e.m.f of the cell : Hp (latm)/ HC1 (a), AgCl (s Ag is 0.3524V and that standard electrode potential of Ag-AgCl is 0.2224V at 25°C. (4) 2 | M-75343 (S1)-734

Short Answer Dec-2020 • PTU B-TECH

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Discuss the molecular geometries of the following :

Short Answer Dec-2020 • PTU B-TECH

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May 2023 Discuss the molecular geometries of the following:
BCl;

Short Answer Dec-2020 • PTU B-TECH

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PCls (Atomic number: B = 5, P= 15) (4)

Short Answer Dec-2020 • PTU B-TECH

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What is effective nuclear charge? Which element has the highest effective nuclear charge? (2)

Short Answer Dec-2020 • PTU B-TECH

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

Short Answer Dec-2020 • PTU B-TECH

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May 2025 What is ionization energy? Which elements have the highest ionization energy? How ionization energy shows variation along the period and down the group?

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?
Explain the following terms :

Short Answer Dec-2020 • PTU B-TECH

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May 2025 Explain the following terms :

Dec 2023 Explain the following terms with example :

Dec 2023 Define the following terms:

Dec 2023 Explain the following :
Chirality (2)

Short Answer Dec-2020 • PTU B-TECH

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May 2025 b) i. Chirality
Enatiomers (2)

Short Answer Dec-2020 • PTU B-TECH

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Diastereomers (2)

Short Answer Dec-2020 • PTU B-TECH

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Optical activity (2)

Short Answer Dec-2020 • PTU B-TECH

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May 2025 b) ii. Optical activity
Discuss the synthesis of acommonly used drug molecule by taking a suitable example.

Short Answer Dec-2020 • PTU B-TECH

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Dec 2023 Explain the synthesis of any one commonly used drug molecule.
Write short notes on the following organic reactions : ”

Short Answer Dec-2020 • PTU B-TECH

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May 2023 Write short notes on the following organic reactions: (4)

Dec 2023 b) Write short notes on the following organic reactions :\\r\\ni) Oxidation Reactions

Dec 2023 a) Write short notes on the following organic reactions: i) Oxidation reactions

Oxidation reactions (2)

Short Answer Dec-2020 • PTU B-TECH

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Ring opening reactions (2) 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. 3 | M-75343 (S1)-734

Short Answer Dec-2020 • PTU B-TECH

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May 2023 Reduction reactions NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper of Answer Sheet will lead to UMC against the Student.

Dec 2023 Free energy. NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper of Answer Sheet will lead to UMC against the Student. 3 |

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Answers about this subject, solved papers, and preparation.

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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 Dec-2020 (B-TECH 1st-2nd)

Chemistry Dec-2020

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