GATE CH historical topic weightage
Explore topics represented in the imported archive. Classification and answers still require editorial review.
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Historical coverage, with context
A question can carry multiple topic tags. Counts and marks are independent per topic; adding rows can count the same question more than once. Use the data to explore past papers alongside the syllabus.
10 available years · 10 papers
ALL YEARS · COMPLETE ARCHIVE
Compare topics across all years
2017–2026 · 10 archived years · 10 papers. Compare total tagged coverage, recurrence and the observed range across years. This analysis uses the selected range and stays independent of the paper year selector.
Average = total matched tagged marks ÷ all 10 papers in this range. Years without a matching tag add no matched marks to this calculation; this does not establish zero actual exam coverage. Read the average alongside the years tagged.
The observed range uses only years with matched data, dividing each year’s marks by its paper count. Topic tags overlap, so totals cannot be added into a whole-paper marks split.
Process Calculations and Thermodynamics
Tagged in 10 / 10 years
- Tagged marks
- 124
- Tagged questions
- 79
- Avg marks / archive paper
- 12.4
- Observed marks / paper
- 9–16
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Mass Transfer
Tagged in 10 / 10 years
- Tagged marks
- 123
- Tagged questions
- 77
- Avg marks / archive paper
- 12.3
- Observed marks / paper
- 9–17
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Fluid Mechanics and Mechanical Operations
Tagged in 10 / 10 years
- Tagged marks
- 120
- Tagged questions
- 77
- Avg marks / archive paper
- 12
- Observed marks / paper
- 10–17
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Chemical Reaction Engineering
Tagged in 10 / 10 years
- Tagged marks
- 115
- Tagged questions
- 70
- Avg marks / archive paper
- 11.5
- Observed marks / paper
- 8–15
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Heat Transfer
Tagged in 10 / 10 years
- Tagged marks
- 92
- Tagged questions
- 57
- Avg marks / archive paper
- 9.2
- Observed marks / paper
- 5–12
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Instrumentation and Process Control
Tagged in 10 / 10 years
- Tagged marks
- 86
- Tagged questions
- 54
- Avg marks / archive paper
- 8.6
- Observed marks / paper
- 6–13
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Quantitative Aptitude
Tagged in 10 / 10 years
- Tagged marks
- 58
- Tagged questions
- 38
- Avg marks / archive paper
- 5.8
- Observed marks / paper
- 3–10
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Chemical Technology
Tagged in 10 / 10 years
- Tagged marks
- 44
- Tagged questions
- 38
- Avg marks / archive paper
- 4.4
- Observed marks / paper
- 3–7
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Plant Design and Economics
Tagged in 10 / 10 years
- Tagged marks
- 43
- Tagged questions
- 27
- Avg marks / archive paper
- 4.3
- Observed marks / paper
- 1–7
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Calculus
Tagged in 10 / 10 years
- Tagged marks
- 40
- Tagged questions
- 29
- Avg marks / archive paper
- 4
- Observed marks / paper
- 2–7
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Verbal Aptitude
Tagged in 10 / 10 years
- Tagged marks
- 37
- Tagged questions
- 28
- Avg marks / archive paper
- 3.7
- Observed marks / paper
- 2–6
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Analytical Aptitude
Tagged in 10 / 10 years
- Tagged marks
- 27
- Tagged questions
- 16
- Avg marks / archive paper
- 2.7
- Observed marks / paper
- 2–4
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Numerical Methods
Tagged in 10 / 10 years
- Tagged marks
- 27
- Tagged questions
- 16
- Avg marks / archive paper
- 2.7
- Observed marks / paper
- 2–5
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Probability and Statistics
Tagged in 10 / 10 years
- Tagged marks
- 23
- Tagged questions
- 15
- Avg marks / archive paper
- 2.3
- Observed marks / paper
- 1–5
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Spatial Aptitude
Tagged in 6 / 10 years
- Tagged marks
- 22
- Tagged questions
- 14
- Avg marks / archive paper
- 2.2
- Observed marks / paper
- 2–7
Matched years: 2019, 2021, 2022, 2023, 2025, 2026
Differential equations
Tagged in 10 / 10 years
- Tagged marks
- 20
- Tagged questions
- 12
- Avg marks / archive paper
- 2
- Observed marks / paper
- 1–4
Matched years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Linear Algebra
Tagged in 9 / 10 years
- Tagged marks
- 19
- Tagged questions
- 14
- Avg marks / archive paper
- 1.9
- Observed marks / paper
- 1–3
Matched years: 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Complex variables
Tagged in 7 / 10 years
- Tagged marks
- 9
- Tagged questions
- 7
- Avg marks / archive paper
- 0.9
- Observed marks / paper
- 1–2
Matched years: 2017, 2019, 2022, 2023, 2024, 2025, 2026
01 · TOPICS ACROSS YEARS
Topics that recur in the selected years
Sorted by the number of archived years with matching tags, then by tagged marks. These are observations from imported papers, not a forecast or an expert priority ranking.
Process Calculations and Thermodynamics
Present in the matched topic data
- Tagged questions
- 79
- Tagged marks
- 124
Totals across available years; overlaps are retained.
Mass Transfer
Present in the matched topic data
- Tagged questions
- 77
- Tagged marks
- 123
Totals across available years; overlaps are retained.
Fluid Mechanics and Mechanical Operations
Present in the matched topic data
- Tagged questions
- 77
- Tagged marks
- 120
Totals across available years; overlaps are retained.
Chemical Reaction Engineering
Present in the matched topic data
- Tagged questions
- 70
- Tagged marks
- 115
Totals across available years; overlaps are retained.
Heat Transfer
Present in the matched topic data
- Tagged questions
- 57
- Tagged marks
- 92
Totals across available years; overlaps are retained.
Instrumentation and Process Control
Present in the matched topic data
- Tagged questions
- 54
- Tagged marks
- 86
Totals across available years; overlaps are retained.
1 paper · 65 archived questions · 18 matched topics
02 · YEAR-WISE BREAKDOWN
Explore a year in detail
Choose a year to see its matched topics. Marks are shown from highest to lowest; years with several papers pool those papers.
Fluid Mechanics and Mechanical Operations
11 tagged questions · 17 tagged marks
Process Calculations and Thermodynamics
9 tagged questions · 13 tagged marks
Mass Transfer
7 tagged questions · 12 tagged marks
Chemical Reaction Engineering
6 tagged questions · 11 tagged marks
Instrumentation and Process Control
5 tagged questions · 8 tagged marks
Spatial Aptitude
4 tagged questions · 7 tagged marks
Heat Transfer
3 tagged questions · 5 tagged marks
Calculus
3 tagged questions · 4 tagged marks
Chemical Technology
3 tagged questions · 3 tagged marks
Numerical Methods
2 tagged questions · 3 tagged marks
Plant Design and Economics
2 tagged questions · 3 tagged marks
Quantitative Aptitude
3 tagged questions · 3 tagged marks
Verbal Aptitude
2 tagged questions · 3 tagged marks
Analytical Aptitude
1 tagged questions · 2 tagged marks
Complex variables
1 tagged questions · 2 tagged marks
Differential equations
1 tagged questions · 2 tagged marks
Linear Algebra
1 tagged questions · 1 tagged marks
Probability and Statistics
1 tagged questions · 1 tagged marks
03 · UNDERSTAND THE COVERAGE
What these numbers mean
Check the coverage and matching method before comparing years or choosing study priorities.
How topics are matched
Only normalized labels matching the archived 2026 syllabus are included. 421 raw tag/year rows were omitted or consolidated.
For duplicate aliases, the existing row with the most questions is selected. Overlapping aliases are not summed. This is label matching, not an independently reviewed classification of every question.
Archive and tagging limits
10 papers · 650 imported questions. 0 have no topic tag and 650 have more than one imported tag, including metadata tags.
Each topic/year row counts unique tagged questions and their printed marks. Missing matches mean no matched tag data; they do not prove a topic was not tested.
04 · TURN COVERAGE INTO PRACTICE
Build a balanced revision plan
Combine historical coverage with your current strengths, mistakes and the complete syllabus.
Check your scope
Read every syllabus section and compare it with your preparation checklist.
Practise a topic
Choose a concept, attempt PYQs and record the reasoning behind mistakes.
Attempt a full paper
Use a previous paper to check timing and coverage across subjects.