Mehak Jain AIR 17: Honest UPSC Mains & Prelims Strategy
Mehak Jain (AIR 17, 2021) shares her honest UPSC strategy: consolidating notes, vertical-reading answer writing, ethics, CSAT and bouncing back from prelims failure.
Mehak Jain secured AIR 17 in UPSC CSE 2021 on her third attempt, after missing the Prelims cut-off twice. In this candid Topper's Talk with Neil Sir, she explains the UPSC strategy that actually worked: how she built and consolidated notes, the answer-writing method behind her strong Essay and Ethics scores, how she handled repeated Prelims failure, and how to treat CSAT. The recurring theme is honesty: a lot of success, she insists, is method, but a part of it is also arbitrariness outside your control.
Key takeaways
- Prioritise execution over scheduling. She never followed a fixed daily timetable and studied by mood, focusing on getting things done rather than on a perfect plan.
- Expand your content before Prelims, consolidate it after. Collect the best material widely first, then cherry-pick crisp, reproducible notes for the Mains window.
- In Mains, presentation can matter more than precise content, because the exact question is rarely repeated even when the theme is.
- Use vertical reading and "number of elements" to make an answer look complete at a glance.
- Prelims growth is not linear and there is an element of arbitrariness, so audit your gap from the cut-off honestly before deciding strategy.
- CSAT needs only 33% to qualify but should not be taken lightly; target 85 to 90 with one focused hour a day.
How to manage notes before and after Prelims
Mehak Jain's single biggest strategic lever was timing her note-making to the exam cycle.
- Before Prelims, expand. She gathered the best content she could find, from coaching notes to toppers' notes to good answer copies, building the widest possible knowledge base.
- After Prelims, consolidate. With a large body of notes, she cherry-picked only what was relevant and reproducible, mindful that memory and exam time are limited. Content that merely "looks fancy" but cannot be reproduced under time pressure was cut.
She is openly anti-schedule. She could never stick to a rigid wake-at-7, newspaper-at-8 routine, and instead studied based on mood without being harsh on herself. Neil Sir distils this as: execution beats scheduling, and previous-year-question orientation matters because roughly 70% of Mains themes recur.
The Mains answer-writing method: vertical reading
She has been among the highest Mains scorers in recent years, especially in Essay and Ethics, and credits presentation as much as content.
Vertical reading and perception management
Her guiding idea is that justice should not only be done but be seen to be done. At a glance, the examiner should feel everything has been answered:
- A clear introduction with proper spacing.
- Underline the key terms in the question and turn those exact words into your boxed main headings, so the examiner sees you are addressing precisely what was asked.
- Point-wise arguments, then the flip side or the question's second part.
- A value addition such as a diagram, graph or map where the question allows (she was comfortable with these; others skip them, so play to your strengths).
- A conclusion.
Number of elements and filling the page
She counted "elements" against marks: at least 10 to 12 elements for a 10-marker and 15 to 18 for a 15-marker, where the introduction, conclusion and any diagram each count as one element. She also filled the space deliberately, roughly 1.75 to 2 pages for a 10-marker and aiming for the full 3 pages on a 15-marker.
On practice itself: before Prelims she wrote two to three previous-year questions daily; in the two to three months between Prelims and Mains, she shifted entirely to scheduled, full-length test series, writing every fourth or fifth day. Crucially, improving answer writing needs a mix of self-evaluation, peer feedback and test-series evaluation, not one perfect solution. Do not let perfection be the enemy of good, and accept there is no one-size-fits-all.
How to score in Ethics and Essay
She treats Ethics and Essay as applied subjects where the "secret" is already public, so the edge lies in execution, not in finding a hidden strategy.
- Sit with the syllabus head by head, build basic content for each, and map previous-year questions topic by topic (for example, all attitude questions together).
- Consolidate crisp notes, but unlike, say, History, you cannot just read and reproduce; you must apply your mind and understand the concepts and situations.
- Case studies are roughly half the Ethics paper. Bring practical pragmatism rather than only the "biblical" ideal course of action. Having served in administration for nearly two years, she notes the ideal societies aspirants write about are often not practical on the ground. Her Public Administration optional gave her an administrative angle she used throughout.
Bouncing back from repeated Prelims failure
Her honesty about Prelims is the heart of the video.
- In her first attempt (2019) she scored 92 against a 98 cut-off, missing by six marks, despite leaving parts of the syllabus.
- In her second attempt (2020) she scored 85 against a 92 cut-off, so the gap widened. Prelims growth, Neil Sir points out, is not linear.
- The change in the third attempt was mostly mindset, not new material. She used the same core sources, Spectrum for Modern History and Laxmikant for Polity, but with a clearer approach and a strict checklist of standard books revised repeatedly.
On test series, she found the middle path. The first time she did 80 to 90 papers (too many); the second time 20 to 30 (too few); the third time around 50 tests, roughly 25 to 26 sectional and about 20 full-length, completing one institute's series and then adding open mocks from others to decode patterns. Her summary: trust the same sources even after failure, because difficult, boring, repetitive work is what brings results.
Subjects with no single book, CSAT and planning
For subjects like governance and internal security with no single textbook, map previous-year questions first, define your own syllabus, then build three layers of notes: a coaching base, gap-filling from toppers' notes, and finally Google searches (type the topic plus "UPSC", read a few articles, make one or two pages). The goal is to become autonomous.
On CSAT, only 33% is needed, but she warns the paper has genuinely become harder over the years. Aim for 85 to 90 as a buffer, focus on the low-hanging questions, and ignore the one or two very hard items. If weak, give it one disciplined hour daily for six months through incremental learning rather than over-mastering a single topic.
On planning from July, audit your baseline first: how far were you from the cut-off? If you are within 10 to 15 marks, blame some of it on randomness; if you are scoring 50 to 60 against a 90 cut-off, your fundamentals need restarting. Then taper gradually from Mains-heavy study toward Prelims as the exam approaches, remembering the standard sources are shared and only your orientation changes.
Who should watch this
This Topper's Talk suits serious UPSC aspirants in the Mains and interview cycle, especially repeat candidates demoralised by Prelims setbacks, and anyone wanting a grounded, hype-free view of note-making, answer presentation, Ethics, Essay and CSAT.
Her parting advice is simple: trust the process, yourself and your sources; avoid constant comparison with peers; and remember it is just an examination, with success and happiness ultimately self-defined. If you want to turn these ideas into habit, build the daily writing muscle through Daily Answer Writing practice and study the structure she describes in how to write Mains answers. To stress-test your presentation under time, work through the Mains test series and shore up the basics with the Prelims test series. For more grounded mentor guidance, explore the blog.
Frequently asked questions
How should you make notes before and after UPSC Prelims?
Mehak Jain expanded her notes by collecting the best content from many sources before Prelims, then consolidated everything into crisp, reproducible notes after Prelims, keeping memory and exam time limits in mind.
What is vertical reading in UPSC Mains answer writing?
It means structuring an answer so that at a single glance it looks complete: a clear introduction, boxed and underlined headings drawn from the question's keywords, point-wise arguments, a value addition such as a diagram, and a conclusion.
How many elements should a UPSC Mains answer have?
She aimed for at least 10 to 12 elements in a 10-marker and 15 to 18 in a 15-marker, counting the introduction, conclusion and any diagram as separate elements.
How much CSAT preparation does UPSC really need?
You only need 33% to qualify, so she advises targeting 85 to 90 marks as a buffer. If you are weak, one focused hour of CSAT every day over six months is enough to clear it comfortably.
What should you do after failing UPSC Prelims?
Audit how far you were from the cut-off, fix your fundamentals and book list, revise standard sources, and use the gap to build Mains notes, while respecting the timing of each stage.

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