IIT Topics: What You Need to Know About JEE, Seats, and Top IITs

When you think about IIT topics, the core subjects and challenges tied to getting into India’s top engineering institutes. Also known as IIT entrance preparation, it isn’t just about memorizing formulas—it’s about understanding how the system works, from the number of seats to the cutoffs that decide your future. If you’re aiming for an IIT, you’re not just studying physics or math—you’re playing a game with rules that change every year, and most people don’t know the real ones.

There are 23 IITs in India, and together they offer about 18,000 undergraduate engineering seats in 2025. But here’s what no one tells you: those seats aren’t evenly spread. IIT Bombay and IIT Delhi take the top spots in cutoffs, especially for Computer Science. Your home state also matters—some seats are reserved for students from that state, so a rank of 500 in one state might get you in, while in another, you’d need 300. The IIT JEE, the national exam that opens the door to all IITs. Also known as Joint Entrance Examination, it’s not a test of who’s the smartest—it’s a test of who’s the most consistent. You don’t need to solve every hard problem. You just need to avoid silly mistakes and manage your time right.

And it’s not just about the exam. The hardest IIT, the one with the highest competition and lowest acceptance rate. Also known as IIT Bombay, it’s where the top 1% of JEE rankers end up, especially in CSE. But even within IITs, some departments are harder to crack than others. A rank that gets you into Mechanical at IIT Kharagpur might not even get you into Civil at IIT Bombay. Meanwhile, the IIT seats, the total number of engineering spots available across all institutes. Also known as IIT admission capacity, they’re split by category—General, OBC, SC, ST—and by branch. That’s why your rank alone doesn’t tell the whole story. You need to know how many seats are left after reservations, and which branches fill up fastest.

Most students focus only on coaching and practice papers. But the real edge comes from knowing the system. Who gets the last seat in IIT Madras? Why does IIT Kanpur have lower cutoffs than IIT Roorkee for the same branch? What happens if you’re just 10 ranks below the cutoff? These aren’t just questions—they’re decisions that change your path. The posts below give you the real numbers, the hidden rules, and the stories from students who made it. No theory. No hype. Just what actually matters when you’re sitting for JEE Advanced next year.