Apart from going through the questions, also check some of the important observations given in points below:

• Starting from First war of Independence in 1857, make sure to memorize the years of all the major movements

• Understand the change of political scenario with the formation of Extremists and Moderates groups

• Indian National Movement, Swadeshi Movement, Congress Socialist Party are some of the important topics to cover

• Make sure to go through the economic developments at the time of Colonial India

• Also, you can go through some of the important topics for UPSC IAS Prelims Preparation 2020 from links below

Map and Climate Dominate: To support this argument, by the perusal of the GS Prelims question papers one finds that two different type of questions finds a balance. Straight forward factual questions and three or more statement questions are pretty equal. Hence apart from facts, if you prepare well in this area you can score more marks by elimination. It is aided by the fact that in four years only one two-statement question has been asked which is highly ambiguous

Nation before The World: Under the important areas, India finds favor when compared to the world. Two-thirds of the questions in the above-mentioned areas are from Indian geography and that presents a strong reason why one should prioritize this topic.  

Economy is an interesting topic and as future administrators, UPSC aspirants need to possess a reasonably good understanding of the basic tenets of economics makes a country run, how its finances are managed, the basic terms and definitions frequently in news, basic banking operations, budget, etc. are topics that has to be read about. This subject is intricately linked to current affairs.

Important topics for Economy

• National income accounting, inflation, balance of payment, fiscal policy, monetary policy, RBI, PSL.

• Finance commission – recommendations, themes.

• International organisations – World Bank, IMF, WTO, UNCTAD, WEF and their reports. Bodies like G-15, G-7, G-33, etc.

• Basic economic terms, demographic dividend, inclusive growth.

• Government schemes and budgets.

Environment and ecology is a very important segment of the UPSC prelims syllabus. What makes it interesting is that it is intertwined with current affairs immensely. It also has an overlap with other subjects such as geography, economy and social issues for the IAS exam. Every year, several questions are asked from this section in the IAS prelims and also the mains exam. In 2019, there were 11 questions from environment and ecology sections in the IAS prelims. This number could also go up in the future if you consider the importance of issues like climate change, global warming, conservation and so on. The topics have both an India- and a global perspective. In this article, we discuss the trend analysis of the environment and ecology section in the past IAS prelims papers.

1. Lots of questions and statements are repeated year after year.

2. More than questions, topics are repeated year after year.

3. Even when you don’t know all the options, often answer the option, which is clearly visible

4. UPSC don’t ask article numbers. Not a single question with article number was asked in past 7 years 

5. UPSC doesn’t ask questions which need remembering very intricate yet very useless details. For instance – reservation in local bodies is at least 1/3 or as near as 1/3 or something else or which laws are not applicable to J & K

6. Almost all polity questions are doable i.e if you have read polity and constitution decently enough i.e understood essence of important articles, you would able to solve with >90% accuracy.

Science & Technology includes basic science like Physical, Chemical, Biological, Bio-Chemistry and Technology. Very basic way to prepare this section is to get acquainted with current developments with respect to all the domains, part of Science & Technology. Here we classify the domains and let you understand the very diversified and analytical nature of questions asked. Ours will not be a bookish or coaching strategy. You may differ, you may have your own strategy, you may like any other strategy but this is what our experience has shown us.  Let us proceed and start with Basic Science.

So, instead of finishing NCERT textbooks from first to last page, you should do selective study of chapters / topics having relevance with environment, agriculture, public health, biotech, space and ICT/communication. Give more attention towards Class 11-12.

While preparing science Current/Contemporary affairs, the target areas should be Environment, Agriculture, Public Health, Biotech, ICT/communication and Space. Within Space, first priority to ISRO than NASA, then other countries and lastly to the randomly discovered stars and planets.

In UPSC Preliminary Exams, the number of question asked from International Organization and other direct facts are very easy questions. If you have gone through across the topics, you can easily attend those questions.

Also the Questions are usually asked from International Relations - ADB, WTO, WHO, WTO, UN Organizations, IAEA, BRICS, ASEAN, SAARC, SCO, and some other organizations.

Usually the questions are in the name of reports published by the Organization and another aspects are recently in news regarding the joint declarations, amendments and enforcement, etc.,

This area is very easy option to score and make aspirants enter into the next level.