Go through at least last three years of BHU PET question paper of M.A. Political Science. You will get a pretty good idea about the question pattern. Often questions are repeated as well. 

You need to have a clear knowledge of the Political Science subjects taught at the graduation level, to score well in the examination. 

Read books to learn something new and interesting, not to make an impression during the interview. Something that can be added to your knowledge base. If you read to impress the panel, you'll be more concerned with completing the number of books than with gaining a deeper understanding of the context, which can defeat the purpose of reading entirely. Keep in mind that some people can read quickly and with great comprehension. It could be a lifelong hobby for them. Maintain your current pace.

In terms of books, there are some common genres that can be good conversation topics during interviews, such as history, politics, innovation, literature, and so on, but read what interests you. Even if you're reading simple books like Harry Potter, it's fine as long as you can answer some good questions about what you've learned from the characters, incidents, or the book as a whole. Do read about the author and his/her other works as well. You will be questioned about other works by the same author or similar books that are available. Make sure you can explain why you chose a specific genre.

Yes, it is extremely competitive, particularly in the GD at IIM Ahmedabad. You would now have WAT (Written Analysis Test).

You should prepare for GD by reading 3 to 4 topics per day, reading magazines and newspapers, using the internet, and taking notes in a notebook. Draw diagrams and try to construct a thought structure for each topic. This approach should be useful unless and until you are a voracious news reader/consumer. And, yes, keep a physical notebook. Prepare all common questions for PI, such as Why MBA, Tell Me Something About Yourself, and so on. Perform some mock interviews. If you can get your hands on some alumni, conduct mock interviews with them.

For all call-getters, IMS organizes an Achievers' Workshop (with some consent to claim your credentials, if you get selected). Mock interviews are conducted by IIM (including IIMA) alumni during the IMS workshop. Mock interviews are essential; conduct at least three to four over the course of a month to improve your interview skills. Do your own soul-searching and plan your responses before the mocks. Structure implies having a reason for saying what you said.

In comparison to IIM Indore and DUJAT, IIM IPM Rohtak Aptitude Test does not include questions from 11th and 12th-grade mathematics. The IIM Rohtak Math section focuses primarily on Quantitative Aptitude.

The following is a section-by-section analysis of the paper:

• 40 minutes of QA - 40 questions

There are ten to eleven questions on numbers and related topics. There are 13-14 questions on Arithmetic, with 5 on basic percentages, 2 on Time and Work and 2 on Boats and Streams, and 1 on Pipes and Cistern, Mixture, Profit and Loss, and Trains. There are three Trigonometry questions, two of which are based on heights and distance and the other on Trigonometric Identities. There will be a question from each of the following categories: Age Problem, Set Theory, Permutation and Combination, and Probability. There are also 3-4 Geometry questions and 4 Data Sufficiency questions.

• 40 minutes for LR - 40 questions

Conclusion, Syllogism, Coding-Decoding, Number Series, and Code-based Comparison each have five questions. Following that, there are three questions each on Blood Relationship, Direction Sense, Set Theory, and Cause and Effect. Clocks and Calendars each have one question.

• 40 minutes for VA – 40 questions

There are three passages, each with three, three, and four questions. Each passage is one paragraph long and contains 400-500 words. The questions on Vocabulary are given a higher weightage, with 6 direct questions on Antonyms and Synonyms, 5 questions on Spelling Mistakes, 4 questions on Analogies, and 3 questions on Word Usage. There are 3-4 Para Jumble questions and 4-5 Sentence Completion questions. Two questions, one each on conjunction and passive voice, are likely to be asked.

A few years back, my brother applied for the MS program in Engineering Mechanics at JNCASR. The written test was conceptual. They aim to test your mathematical skills and fluid mechanics knowledge. Solving the Mathematics portion can be easy if you know the proof of all concepts. There were also questions regarding Heat Transfer. 

The Interview will depend on what you have written in the test. They may ask to prove what you have written in the paper. They will ask you to choose a topic of your choice and ask questions about it. They will ask you about your B.Tech project. 

Rather than preparing to join SPA Delhi, you should prepare to be an Architect or Designer. Try to learn software such as sketch up, Revit, 3D max, etc. These are fun to learn. Also, make a habit of reading articles and publishings related to Architecture and Design. Practice sketching whatever you like.

For a UG course at SPA Delhi, you will need to go through JEE Main (Paper 2). 

Some books I’d highly recommend to first-year B.Tech. students at NIT Jalandhar are:

• For basic electrical - Fundamentals of electric circuits, Kothari.

• Millman or Boylestad or NN Bhargava (basic electronics 

• Amit Lal's videos on youtube are enough for Management principles

• B.S. Grewal (Mathematics)

• Let us C (Computer Programming).

• Manas Patnaik videos are enough for engineering graphics

• You will receive a pdf from your professor for Manufacture process

• general knowledge is enough, no need to study Environmental ethics

• Schwam series and data structures with C for Data Structures.

These books along with self-study and class notes will be more than enough for a B.Tech. student in the first year.