About this previous year paper
This is a complete AKTU B.Tech 1st Semester (KAS102) Engineering Chemistry question paper of 100 marks, designed exactly as per the university examination pattern. The paper is divided into Section A, Section B, and Section C, covering all major topics such as bonding, phase rule, spectroscopy, water treatment, fuel chemistry, coal analysis, polymers, corrosion, thermochemistry, calorimetry, electrochemistry, and organic reagents like Grignard compounds.
This question paper is extremely useful for AKTU students preparing for semester exams, internal tests, and quick revision of important concepts. It includes a balanced mix of numerical problems, derivations, definitions, reasoning questions, short notes, and application-based questions.
Detailed Breakdown of Question Paper
SECTION A – Very Short Answer Questions (10 × 2 = 20 marks)
This section checks conceptual clarity of fundamental chemistry topics. Key areas include:
Stability order based on molecular orbital theory (N₂ series)
Schottky defect with example
Stokes vs Anti-Stokes lines in Raman spectrum
Fingerprint region in IR spectroscopy
Corrosion behavior of metals (nails in wood)
Phase determination in saturated NaCl system
Water hardness calculations (ppm, °Fr)
HCV & LCV calculation for coal (Dulong’s formula)
Concept of non-polymerizing simple molecules
Applications of polymer composites
These questions are ideal for quick revision.
SECTION B – Descriptive Questions (Any 3 × 10 = 30 marks)
This section includes medium to long derivations and numericals:
MO diagrams of NO and O₂, bond order & magnetic nature
Lambert-Beer’s Law + calculation of absorbance & molar extinction coefficient
Phase rule & water system diagram: triple point, curves, areas, degrees of freedom
Principle & working of Bomb Calorimeter + coal GCV/NCV calculation
Preparation, properties & applications of major polymers (Buna-N, Nylon 6,6, Terylene, Neoprene, Kevlar)
These questions help students understand spectroscopy, thermochemistry, polymer science, and molecular bonding.
SECTION C – Long Answer Questions (5 × 10 = 50 marks)
Each question has two alternatives; attempt one from each.
Q3 – Carbon Allotropes / Liquid Crystals
Preparation, properties & applications of fullerenes (C₆₀ – truncated icosahedron)
OR
Concept & classification of liquid crystals + applications
Q4 – Raman & IR Spectroscopy
Selection rules for Raman; technological advances; choosing IR/Raman based on bonds
OR
Short notes on UV shift, applications of IR, molecular vibration
Q5 – Corrosion / Nernst Equation
Electrochemical corrosion theory + sacrificial & impressed current protection
OR
Use of Nernst equation to calculate pH using electrode potentials
Q6 – Water Softening / Calgon Treatment
Lime–soda calculation for given raw water analysis
OR
Demineralization vs Zeolite process + reactions of Calgon treatment
Q7 – Conducting Polymers / Grignard Reagent
Conducting polymers: classification & applications
OR
Grignard reagent and its five major synthetic applications
These questions strengthen understanding of advanced chemical processes, spectroscopy, electrochemistry, water treatment, polymers, and industrial chemistry.
Why This Question Paper Is Important for Students
This question paper is extremely valuable because it:
Follows the authentic AKTU exam pattern
Covers all high-weightage topics from KAS102
Includes important numericals (water hardness, calorimetry, coal GCV/NCV, Nernst equation)
Helps build strong conceptual chemistry fundamentals
Prepares students for internal exams, viva, and competitive exams
Includes many repeat-type and expected questions
Perfect for final revision before the AKTU semester exam.