Greetings! Here's a detailed response to your query

if you're practicing for JEE online, here's the deal. Testbook's got a ton of practice tests, like little quizzes on each chapter and full-on exam runs. They also break down how you did, so you know what you're good at and what you need to fix. Vedantu's tests feel like the real thing, which is great for getting used to the time crunch and stress. Then, Careers360 throws in even more practice tests and study stuff to help you out. Basically, each site gives you different tools, so you can pick what works best for you and get ready to nail that JEE.

If you're more of a book person, these publishers have you covered for JEE prep. Oswaal Books gives you practice tests with answers that explain everything, and they even throw in some smart tricks. MTG Publications focuses on questions that are super likely to be on the actual exam, with really detailed solutions. Arihant mixes things up with practice sets and past exam questions, so you get a feel for everything. Physics Wallah (PW) gives you solved papers and mock tests with breakdowns, which is awesome for seeing where you went wrong. And finally, ALLEN Career Institute offers test series with complete solutions, which is perfect for really digging into your mistakes and learning from them.

o really get the hang of the JEE, you've gotta look at old exam papers. MathonGo is great for this; they give you past JEE Main papers as PDFs with the answer keys, so you can see exactly how they were solved. Plus, pretty much all the big online learning sites, like Vedantu, have these papers too. And if you prefer books, publishers like Arihant and MTG always include previous year papers in their JEE prep books. Basically, these resources give you tons of ways to practice with real JEE questions, which is super important for getting ready.

I hope this helps.