Checked 28 September 2026. Papers and keys are official (GATE download pages). The topic classification, question-type counts and repeat list are ours, from a question-by-question working file.
The GATE Geomatics booklet prints 84 questions and you answer 65: General Aptitude, Part A, and one of Part B1 or B2. That makes the usual “chapter-wise weightage” tables misleading, because a B2 question is worth nothing to a candidate who chose B1. We sorted every question of the 2023, 2024, 2025 and 2026 booklets, 336 in all, onto the 2027 syllabus headings and counted each part separately. Three findings stand out. Remote sensing is the single biggest block, about 17 of Part A’s 55 marks. B1 is steady year to year, while B2 swings. And Part A has turned from MSQ-heavy to MCQ-heavy, which puts more of it under negative marking.
Our classification of the official GE papers and final keys.
Part A (compulsory, 55 marks)
| 2023 | 2024 | 2025 | 2026 | Mean marks | |
|---|---|---|---|---|---|
| Remote Sensing | 11 / 17 | 12 / 19 | 10 / 16 | 10 / 16 | 17.0 |
| Engineering Mathematics (errors, least squares) | 9 / 13 | 9 / 13 | 9 / 13 | 10 / 16 | 13.75 |
| GIS | 9 / 14 | 8 / 13 | 10 / 16 | 8 / 12 | 13.75 |
| GNSS | 7 / 11 | 7 / 10 | 7 / 10 | 7 / 10 | 10.25 |
Darker = more marks.
Our classification of the official papers. In 2026 one Part A question (Q23, Mercator projection) was a B1 Maps topic; it is not in these rows.
Part A is remarkably stable. GNSS has had exactly 7 questions every year. Engineering Mathematics (errors, most probable values, least squares and the χ² test) has had 9 or 10. Remote sensing and GIS move by two questions at most. If you are short of time, Part A is where preparation pays most reliably: it is compulsory, it is 55 of your 85 subject marks, and its topics barely move.
Part B1 and Part B2 (30 marks each; you answer one)
| 2023 | 2024 | 2025 | 2026 | Mean marks | |
|---|---|---|---|---|---|
| B1: Land Surveying | 7 / 11 | 8 / 13 | 8 / 13 | 7 / 12 | 12.25 |
| B1: Maps | 7 / 11 | 6 / 9 | 6 / 9 | 5 / 8 | 9.25 |
| B1: Aerial Photogrammetry | 5 / 8 | 5 / 8 | 5 / 8 | 7 / 10 | 8.5 |
| B2: Data Quantization and Processing | 5 / 7 | 4 / 6 | 3 / 5 | 6 / 9 | 6.75 |
| B2: Image Enhancement | 3 / 5 | 6 / 8 | 2 / 3 | 5 / 9 | 6.25 |
| B2: Image Transformation | 3 / 5 | 2 / 4 | 4 / 6 | 2 / 4 | 4.75 |
| B2: Radiometric and Geometric Corrections | 3 / 4 | 3 / 4 | 3 / 5 | 4 / 5 | 4.5 |
| B2: Classification and Segmentation | 3 / 5 | 2 / 4 | 4 / 6 | 1 / 2 | 4.25 |
| B2: Digital Image Processing | 2 / 4 | 2 / 4 | 3 / 5 | 1 / 1 | 3.5 |
Darker = more marks within the 30-mark part.
Our classification of the official papers.
| 2023 | 2024 | 2025 | 2026 | Part | Topic (2027 heading) | Mean marks |
|---|---|---|---|---|---|---|
| 11 / 17 | 12 / 19 | 10 / 16 | 10 / 16 | A | Remote Sensing | 17.0 |
| 9 / 13 | 9 / 13 | 9 / 13 | 10 / 16 | A | Engineering Mathematics (errors, least squares) | 13.75 |
| 9 / 14 | 8 / 13 | 10 / 16 | 8 / 12 | A | GIS | 13.75 |
| 7 / 11 | 7 / 10 | 7 / 10 | 7 / 10 | A | GNSS | 10.25 |
| 7 / 11 | 8 / 13 | 8 / 13 | 7 / 12 | B1 | Land Surveying | 12.25 |
| 7 / 11 | 6 / 9 | 6 / 9 | 5 / 8 | B1 | Maps | 9.25 |
| 5 / 8 | 5 / 8 | 5 / 8 | 7 / 10 | B1 | Aerial Photogrammetry | 8.5 |
| 5 / 7 | 4 / 6 | 3 / 5 | 6 / 9 | B2 | Data Quantization and Processing | 6.75 |
| 3 / 5 | 6 / 8 | 2 / 3 | 5 / 9 | B2 | Image Enhancement | 6.25 |
| 3 / 5 | 2 / 4 | 4 / 6 | 2 / 4 | B2 | Image Transformation | 4.75 |
| 3 / 4 | 3 / 4 | 3 / 5 | 4 / 5 | B2 | Radiometric and Geometric Corrections | 4.5 |
| 3 / 5 | 2 / 4 | 4 / 6 | 1 / 2 | B2 | Classification and Segmentation | 4.25 |
| 2 / 4 | 2 / 4 | 3 / 5 | 1 / 1 | B2 | Digital Image Processing | 3.5 |
Questions / marks per topic, our classification. B2’s “Data Quantization” row includes the Fourier questions of 2024–2026, which are out of the 2027 syllabus.
B1 has three topics, and none of them moved by more than two questions between years. Land surveying leads with about 12 marks, then maps and photogrammetry. B2 has six topics that swing: enhancement went from 2 questions in 2025 to 5 in 2026, and classification from 4 to 1. Our comparison guide on choosing B1 or B2 works through what that means.
Question types by part
From the official final keys.
| Year | Part A (MCQ / MSQ / NAT) | Part B1 | Part B2 |
|---|---|---|---|
| 2023 | 22 / 20 / 13 | 13 / 8 / 9 | 14 / 8 / 8 |
| 2024 | 27 / 24 / 4 | 10 / 6 / 14 | 12 / 10 / 8 |
| 2025 | 30 / 6 / 19 | 16 / 4 / 10 | 11 / 9 / 10 |
| 2026 | 30 / 10 / 15 | 16 / 4 / 10 | 11 / 16 / 3 |
Marks by type within each part, from the official final keys (our count).
Three readings (ours). Part A swung from MSQ to MCQ: 24 MSQ marks in 2024, 6 and 10 in 2025 and 2026. MCQs carry −1/3 or −2/3 for a wrong answer, so guessing costs more now than it did. B2 was the MSQ part in 2026 (16 of 30), while B1 stays MCQ- and NAT-led. And single-key MSQs recur every year: a “select all that apply” question with exactly one correct option (2023 Q52; 2024 Q39, Q40, Q42, Q44 and Q80; 2025 Q59; 2026 Q21, Q78 and Q81). Do not assume an MSQ must have two answers.
The questions that keep coming back
| Topic | Part | Where asked |
|---|---|---|
| Standard error and most probable value | A | 2023 Q11, Q28, Q29; 2024 Q13, Q27, Q28, Q30; 2025 Q25, Q36, Q41 |
| Triangulation and trilateration | A / B1 | 2023 Q45, Q53, Q58; 2024 Q19, Q39, Q57; 2026 Q25, Q36, Q65 |
| Contrast stretch and histogram equalisation | A / B2 | 2023 Q76, Q80; 2024 Q25, Q69, Q70, Q84; 2025 Q71; 2026 Q66, Q79 |
| Resampling and interpolation | A / B2 | 2023 Q84; 2024 Q71; 2025 Q19, Q31, Q66, Q75, Q83; 2026 Q80 |
| Bearings and traverse | A / B1 | 2023 Q47; 2024 Q55; 2025 Q26, Q50, Q57, Q59; 2026 Q53 |
| Geoid and orthometric height | B1 | 2023 Q51, Q59, Q61; 2024 Q59; 2025 Q55; 2026 Q57 |
| Microwave and SAR | A | 2023 Q33, Q38, Q39; 2025 Q28, Q45; 2026 Q28 |
| Relief displacement | B1 | 2023 Q49; 2024 Q65; 2025 Q54, Q80; 2026 Q54 |
| Blackbody radiation and Wien’s law | A | 2023 Q39; 2024 Q26, Q33; 2025 Q14; 2026 Q44 |
| DBMS and SQL | A | 2023 Q35; 2025 Q20, Q21, Q32; 2026 Q39 |
| TIN and DEM | A / B1 | 2023 Q45; 2024 Q24, Q37, Q39; 2026 Q49 |
| NDVI, NDWI and other indices | A / B2 | 2023 Q83; 2025 Q69, Q81; 2026 Q21, Q78 |
| Buffer | A | 2023 Q22; 2024 Q38; 2025 Q34; 2026 Q20 |
| Digitising errors | A | 2023 Q24; 2024 Q23; 2025 Q77; 2026 Q19 |
| Chi-square test | A | 2023 Q13, Q25; 2024 Q14; 2025 Q11 |
| Dilution of precision (DOP) | A | 2024 Q21; 2025 Q46; 2026 Q15 |
| UTM zone | B1 | 2023 Q63; 2024 Q49; 2025 Q62 |
| Survey of India sheet numbering | B1 | 2023 Q52; 2024 Q48; 2025 Q49 |
| Parallax and stereo height | B1 | 2023 Q64; 2025 Q58; 2026 Q47 |
Question numbers as printed in the official papers, from a search of the question text (our work). Some topics span two parts because the same idea is asked in Part A and in a B part. Also recurring: satellite orbits and sun-synchronous orbits (10 items, every year), convolution and kernels (11, every year), and covariance and correlation matrices (10).
Use this list as a revision checklist. The pattern is clear: GE setters return to a set of standard computations. In Part A these are standard error, least squares, DOP, buffers and blackbody radiation. In B1 they are relief displacement, parallax, UTM zones and sheet numbers. In B2 they are convolution, contrast stretching, resampling, image storage in bits and bytes, PCA and indices. Every one of them is a numerical you can drill.
The official papers and keys
| Year | Question paper | Final key | Note |
|---|---|---|---|
| 2026 | GE.pdf | GE_Keys.pdf | Single session (7 Feb 2026, afternoon); the key lists MCQs in master order |
| 2025 | GE2025.pdf | GE_Keys.pdf (2025_Key folder) | Single session; GA Q8 marks to all |
| 2024 | GE24S2.pdf | GEFinalAnswerKey.pdf | Single session; GA Q7 and Q10 marks to all |
| 2023 | ge_2023.pdf | GE_ANS_GATE2023.pdf | Single session |
| 2022 | ge_2022.pdf | ge_2022.pdf (Answer_keys2022 folder) | First official GE paper in the archive; not in our counts |
File names as served under gate2027.iitm.ac.in/static/doc/download/. The links are in the sources below.
Write 2025 and 2026 last. They are the closest to the current setters and are on the lowest-scoring fields, so they are the best check of whether your marks are competitive. When you mark a paper, strike out the Fourier questions (2024 Q73, 2025 Q76, 2026 Q70 and Q77), which are now out of the syllabus. Write both B parts once, even if you have chosen one, so that the choice in the exam hall is an informed one.
Five official GE papers: your practice tracker
Tick a paper once you have written it in three hours (GA, Part A and your B part) and marked it against the final key.
0 of 9 done
Ticks are saved only in this browser on this device.
Practise it, don't just read it
UTM zones, the Survey of India sheet system and datums repeat in Part B1. Our Map Projections and Distortions quiz drills the projection side.
The ProSyllabus GATE Geomatics library has three topic quizzes today: Map Projections and Distortions and Coordinate Systems and Datums (Part B1 Maps and Part A GNSS ground) and Microwave Remote Sensing Principles (Part A Remote Sensing), each with a worked explanation for every option.
Which topic has the most weightage in GATE Geomatics?
Remote sensing, at about 17 of Part A’s 55 marks each year from 2023 to 2026 (our count). Engineering Mathematics and GIS follow at about 13.75 each, then GNSS at about 10.
Where can I download GATE GE previous year papers?
From the download page of the GATE 2027 website (IIT Madras). Each year from 2022 to 2026 has its own GE paper and answer key.
How many questions are in the GATE GE paper?
The booklet shows 84 questions: 10 GA, 36 Part A, 19 Part B1 and 19 Part B2. You answer 65: GA, Part A and one B part.
Is there negative marking in GATE Geomatics?
Only on MCQs: −1/3 for a one-mark and −2/3 for a two-mark question. MSQ and NAT have none, and MSQ has no partial credit.
Which questions repeat in GATE GE?
Standard error and most probable value, least squares, triangulation, DOP, buffers, blackbody radiation, relief displacement, UTM zones, Survey of India sheet numbers, convolution, contrast stretching and resampling appeared in three or more of the 2023–2026 papers.
Are Part B1 and B2 equally difficult?
They carry the same 19 questions and 30 marks. B1’s three topics are steady from year to year; B2’s six topics swing more. GATE does not publish separate B1 and B2 statistics.
More in this series
- GATE Geomatics 2027 syllabus: every change
- GATE Geomatics marks vs score vs rank + calculator
- GATE Geomatics Part B1 or B2: how to choose
- Jobs after GATE Geomatics: who hires, through which exam
- M.Tech after GATE Geomatics: IIT, NIT, IIST cut-offs
- GATE Geomatics notice board — official updates
- GATE Geomatics Engineering: the complete guide
- GATE Geomatics paper analysis
- GATE Geomatics cut-off, colleges and placements
Sources
- official — GATE 2027 — Downloads (previous papers and keys)
- official — GATE 2026 GE question paper (PDF)
- official — GATE 2026 GE final answer key (PDF)
- official — GATE 2025 GE question paper (PDF)
- official — GATE 2025 GE final answer key (PDF)
- official — GATE 2024 GE question paper (PDF)
- official — GATE 2024 GE final answer key (PDF)
- official — GATE 2023 GE question paper (PDF)
- official — GATE 2023 GE final answer key (PDF)
- official — GATE 2022 GE question paper (PDF)
- official — GATE 2022 GE answer key (PDF)
- official — GATE 2027 GE (Geomatics Engineering) syllabus (PDF, IIT Madras)
- official — GATE 2027 Information Brochure, IIT Madras (revised 27 Sep 2026)
official = a document published by the conducting body. reported = a news or coaching site we could not check against an original. Where sources disagree this page says so rather than picking one.













