UPSC Prelims Heuristics: Solving 2022 Questions 81-90

This is Part 9 of the Sherlocking Prelims 2022 analysis series, where Neil Sir works through questions 81 to 90 of UPSC Prelims 2022 (Set A) to show how basic sources and common sense can carry you through even unfamiliar questions. The focus is not on memorising trivia but on reading directives, eliminating weak options, and maximising attempts to clear the cutoff. If you want a repeatable, low-information method for the GS Paper 1 objective test, this breakdown of real questions is for you.

Key takeaways

• The two pillars of the method are basic sources plus common sense, and the idea that an overarching overview beats in-depth knowledge for staying decisive.
• UPSC sometimes swaps the details between two statements (the cloud question, Q81), so revising basics still matters even when heuristics fail.
• Read the context, not the content: soft directives like "some people" lean correct, while extreme words like "sole", "only" and "all" are usually suspect.
• UPSC loves to tinker with superlatives (first, largest, highest) and data points, so statements built on them are more often wrong.
• When two options sound similar, the answer usually lies between them, and you should prefer the specific option over the vague one.
• The skill of knowing which heuristic to use where only comes from practising previous-year questions repeatedly; the videos are just an entry pass.

The two pillars: basic sources and common sense

Neil Sir restates the foundation that has driven the whole series. First, basic sources combined with common sense give you the best possible chance at Prelims. Second, an overarching understanding of a subject is far more rewarding than in-depth knowledge. His observation, gathered over years of preparing alongside others, is that too much detail often gets you stuck in 50-50 dilemmas, whereas a clear overview keeps you decisive and more likely to pick the option that matches UPSC's scheme.

The overall mindset is to attempt as many questions as possible using logical and elimination tools, even at the cost of an occasional negative, because the goal is to clear the cutoff out of 100 questions, not to be perfect.

Reading directives: context over content

Several questions in this set hinge on how a statement is phrased rather than what it claims.

Soft versus assertive statements

In the refugee-settlement question (Q82), Neil Sir had little factual recall. He still reached the correct answer by focusing on directives. A statement that asserts a point aggressively (a "large" settlement in a specific region) he held with suspicion, while statements opening with the soft phrase "some people" he leaned towards accepting, because exhaustive previous-year analysis shows soft components tend to attach to correct statements. He marked the option combining the two soft statements and got it right.

The statement-swap trap

Question 81 came from geography and dealt with high clouds and low clouds. Both statements looked locally plausible, so he marked the wrong option. The catch: UPSC had swapped the details between the two statements, so what was said about low clouds actually belonged to high clouds. The takeaway is to keep this swap heuristic at the back of your mind in two-statement questions, and to revise basics, because common sense fails on trivial information.

Eliminating with superlatives, data points and "all"

UPSC frequently builds traps out of superlatives and numbers, and this set is full of them.

• Superlatives (Q84, solar power): Statements about the largest solar park or the largest floating solar project carry the superlatives UPSC likes to tinker with, so they are more likely incorrect. The relatively soft statement about a fully solar-powered airport was the safer pick, and that elimination led to the right answer.
• Data points and "all" (Q85, UNCLOS): As a rule, precise data is wrong nine times out of ten, and the directive "all" is usually wrong too. But there are exceptions when "all" produces a logically coherent statement, such as ships of all states, whether coastal or landlocked, enjoying the right of innocent passage. Here all three statements held up. Crucially, he also "played the options": with no "none of the above" available, all three statements could not be incorrect, which guided the choice.
• Contemporary framework (Q83): For the question on an international organisation of Turkic states, he did not rely on an obscure list. He used the contemporary Nagorno-Karabakh issue, knowing Turkey was siding with Azerbaijan and opposing Armenia, to accept Azerbaijan and Uzbekistan (cultural overlap with Turkey) and eliminate the European countries. Read current affairs for the overarching framework, not the buried detail.

When options look alike: prefer the specific

Question 86 (an East China Sea islands dispute) shows the similar-options heuristic. Options A and B both spoke of a China Sea dispute, so the answer was almost certainly between those two. Sitting in the exam he picked the vague option and took a negative. The improved approach: when stuck between a vague statement ("it is generally believed... made by a country") and a specific one (naming China and Japan, the East China Sea), prefer the specific one. As he puts it, people who are not telling the truth tend to be vague, while specificity signals a real, verifiable claim.

Trivia, probabilistic bundling and honest uncertainty

Not every question yields to a heuristic. Questions 87 and 88 (match-the-pairs items) are best handled through probabilistic bundling, a technique he promised to demonstrate fully in the final video; for Q88 he also used local logic (Catalonia belongs to Spain, so a second region is unlikely to be from Spain too). Question 89 on the Wildlife Protection Act turned on the extreme directive "sole property of the government", which he leaned to eliminate, while noting that the official key could still differ from his choice. Question 90, on which insect cultivates fungi, is pure trivia with no shortcut; you either know it or skip it, and wide reading occasionally bails you out. Throughout, he models honest uncertainty, openly flagging where the answer awaits the official key.

Who should watch this

This breakdown suits serious Prelims aspirants who keep getting trapped in 50-50s and want a structured, low-information way to attempt more questions confidently. It is especially useful for repeat aspirants and for anyone who feels they study endlessly yet still second-guess in the exam hall. Beginners can use it to understand why previous-year analysis, not endless fact-collection, is the real lever.

The recurring lesson is that these heuristics are only an entry pass; the resolution to know which tool fits which question comes from solving previous-year papers over and over. Put the method to work on full-length, timed sets in our Prelims test series, and explore the rest of this Sherlocking breakdown along with more guides on the blog.