(SEM II) THEORY EXAMINATION 2023-24 ENGINEERING CHEMISTRY

This document contains the complete B.Tech (Semester II) Engineering Chemistry Question Paper for the academic session 2023–24, Subject Code BAS202, as officially conducted in the university examination. The paper evaluates a student’s understanding of fundamental chemical principles, industrial chemistry concepts, spectroscopy, electrochemistry, polymers, corrosion, water treatment, and other core areas of applied chemistry.
 

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The examination is divided into three well-structured sections—Section A, Section B, and Section C—designed to test conceptual clarity, reasoning ability, numerical skills, and theoretical depth.

Section A contains seven short-answer questions (2 marks each). These cover basic chemical concepts such as molecular stability, nanomaterials, NMR selection rules, UV-visible absorption shifts, electrochemical cell EMF calculation, scale prevention through Calgon conditioning, and polymer classification based on tacticity.

Section B includes numerical and conceptual questions (7 marks each). This section contains application-based problems on anisotropic crystals, UV absorption/intensity shifts, corrosion mechanisms, zeolite softening calculations, and the preparation/reactivity of Grignard reagents.

Section C features long-answer, derivation-based, and structural explanation questions covering molecular orbital theory, green chemistry, spectroscopy (NMR), batteries, cement manufacturing, water softening (lime-soda), and bomb calorimeter calculations. Polymer preparation, properties, applications, and conducting polymer classification are also included.

To illustrate the nature of the paper, here are a few sample questions extracted from it:

Sample Questions from the Paper

“Compare and arrange the following in increasing order of stability: O₂, O₂⁺, O₂⁻.” 

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– This evaluates molecular orbital theory concepts and stability trends.

“Explain the principle and working of the Zeolite process. A zeolite softener was regenerated using 50 L of NaCl solution… Calculate the hardness of water softened by this zeolite.” 

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– This tests numerical ability and understanding of water-softening methods.

These represent the type and difficulty level of questions found throughout the paper.

Apart from the sample questions above, the actual paper includes many other questions related to:

Hydrogen evolution & oxygen absorption mechanisms in corrosion

Noble & sacrificial metallic coatings

UV-visible spectroscopy shifts and solvent effects

NMR signals, splitting patterns, and structure prediction

Portland cement manufacturing and setting reactions

Electrochemical cell calculations & battery reactions

Lime–soda process numerical computations

Gross & net calorific value of coal using Bomb calorimeter

Preparation, properties & applications of polymers (Neoprene, Nylon 6,6, Terylene)

Conducting polymers, classification, and applications

All these questions help students develop a strong conceptual base in engineering chemistry and understand the kind of questions commonly asked in university exams.

This question paper provides a complete academic overview of the Engineering Chemistry curriculum, helping students understand the exam format, expected question style, chapter weightage, and the depth of knowledge required to score well.

Additionally, other similar and related questions are included in the study notes, enabling students to practice more extensively for theoretical, numerical, and analytical sections.