Data-Driven โ€ข 8 PYQ Papers Analysed

Score Full Marks
in Chemistry

21CHC101J ยท SRM IST ยท Semester 1
Engineering Chemistry โ€” Complete Smart Study Hub

5
Units Covered
8
PYQs Analysed
150+
Questions Mapped
10
Must-Know Topics
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๐Ÿ“š Notes & Presentations

Unit-wise lecture notes, PPTs & study material synced from Google Drive

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๐Ÿ”ฅ Units 1 & 2 = 40% of marks.  Electrochemistry, Corrosion, and Polymers appear in 7 out of 8 papers. Nernst Equation, EMF calculations, and Conducting Polymers are guaranteed mark-scorers. Prioritise these units first!
๐Ÿ“ˆ Data-Driven Analysis

PYQ Pareto Analysis

Based on 8 exam papers. Master the 20% of topics that yield 80% of marks.

๐Ÿ”ฅ HOT
Unit 1
Electrochemistry & Corrosion
25%
19 / 75 marks
๐Ÿ”ฅ HOT
Unit 2
Polymers & Composite Materials
22%
16 / 75 marks
Unit 3
Water Technology
18%
14 / 75 marks
Unit 4
Fuels & Lubricants
18%
14 / 75 marks
Unit 5
Analytical Techniques
17%
12 / 75 marks

๐Ÿ† Top Topics โ€” The Pareto List

Mastering only these topics lets you score 55โ€“65 out of 75

๐ŸŒก๏ธ Topic Frequency Heatmap

๐Ÿ“š Complete Study Guide

Unit-by-Unit Study Guide

Clear concepts, key reactions, worked examples, and common mistakes for each unit.

โšก Quick Reference

Formula Cheat Sheet

All exam-critical formulas, equations, and reactions in one place.

๐ŸŽฏ Exam Strategy

Guaranteed Marks Plan

How to approach each part of the Engineering Chemistry exam for maximum marks.

Part A
25 MCQs ร— 1 = 25 marks
Target: 20โ€“23 / 25
  • Nernst equation & EMF calculations 7/8
  • Types of corrosion (galvanic, concentration cell) 7/8
  • Degree of polymerization & Mn, Mw formulas 6/8
  • BOD, COD, hardness units (mg/L, ppm) 7/8
  • Calorific value โ€” HCV vs LCV difference 6/8
  • Beer-Lambert Law (A = ฮตlc) 6/8
  • Conducting polymers (polyacetylene, PANI) 5/8
  • Ion exchange method for softening 6/8
  • Proximate vs Ultimate analysis difference 5/8
  • IR vs UV-Vis โ€” principle difference 5/8
Part B
5 Questions ร— 8 = 40 marks
Target: 32โ€“40 / 40
QUnitExpected Topic
21U1Electrochemical cell + Nernst EMF calculation ๐Ÿ”ฅ
22U1/U2Corrosion mechanisms OR Polymer synthesis & properties ๐Ÿ”ฅ
23U2/U3Conducting polymers OR Water softening (Lime-Soda)
24U3/U4BOD/COD analysis OR Calorific Value by Bomb Calorimeter
25U4/U5Lubrication mechanisms OR UV-Vis/IR Spectroscopy principle
Part C
1 Question ร— 10 = 10 marks
Target: 8โ€“10 / 10

Choose 1 of 2 questions. Typical options:

Q.26
Electrochemical Corrosion + Prevention Methods (with diagrams) OR Polymer Synthesis โ€” Addition vs Condensation with mechanisms
Q.27
Water Treatment (Coagulation โ†’ Filtration โ†’ Chlorination) ๐Ÿ”ฅ OR Fuel Analysis โ€” Bomb Calorimeter + Proximate/Ultimate Analysis
๐Ÿ’ก Best pick: Electrochemical Corrosion (Part C Q.26) โ€” draw the galvanic cell diagram with labels. For Part C Q.27, write the complete water treatment flowchart with every step named.

๐Ÿ”ฎ Predicted Next Exam Topics

Based on recent patterns

โœ๏ธ Practice Zone

Solved Questions & MCQ Drill

The most-repeated solved questions from 8 years of PYQs, plus MCQ flashcards.

๐Ÿƒ MCQ Flashcards โ€” Active Recall Drill

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โœ… Correct: 0
โŒ Wrong: 0
๐Ÿ“Š Total: 0

โœ… Final Revision Checklist

๐Ÿ“œ Past Year Papers

Solved PYQs

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