JEE Main

If you are preparing it for last two years, one year or 6 months or even you have studied well for boards then you have a chance to get a place among the toppers by following few tips mentioned below.
These tips consist of the outcomes of the students who commit the major mistakes in the exams and perform well in their tests.
Number one, don't try to revise the whole chapter as it will simply consume your time and you will be left with nothing at the end.
Focus more on concepts rather than books and practise sheets quantity.
Be confident about your preparations and don't get demotivated as someone in your institute will pretend to be intelligent but believe in yourself.
Practising the previous year's questions is the mandatory part.
If you want to get all the fundamental and theory knowledge, you can prepare and practise questions from the questions asked in 2005.
At last, take a healthy diet, don't expose yourself much to the outer world till the exams and try to remain safe if possible at the home because our one mistake can ruin our hard work.
Thank you and best of luck.

It differs from person to person depending on one's current academic performance. But yeah it sure is possible to crack IIT JEE Mains and Advance in 1 year if you follow the proper routine. Some of the tips are mentioned below:
- From the point of view of a proper routine, the minimum time you should be dedicating is at least 5-6 hours on self-study regularly. You should split the self-study time into two core parts: one for revision purpose and second for day-to-day self-study. Revision is very essential because syllabus of class 11th and 12th PCM is vast.
- Join a coaching institute and resolve their study materials repeatedly. Nowadays there are numerous tablet courses existing such as Aakash and Plancess. The advantage of joining tablet courses is that you have plenty amount of time for self-study which I contemplate is most vital piece when preparing for IIT JEE. You can go for classroom courses also but yeah then your timetable will be a bit tiresome. But it depends on you if you can accomplish 6 hours of self-study after attending classes or not. Also, they have introduced Adaptive Learning in their test series which I think no other institutes has done yet. -Watch sample lectures yourself in YouTube and go for the one that suits your need well.
- You have to put equal importance to all the three subjects. If you neglect any of the subjects then you will never be able to get rank below 1000. In fact, it will even decrease your probability of clear IIT Advance significantly.
- Always take part in All India Test Series. In this matter, Aakash is best as many students participate in Aakash All India Test Series. FIT JEE also good when it comes All India Test Series. All India Test Series will give a proper assessment of where you lie among the crowd as you will be competing with 12 lac students in IIT JEE Mains. So, you should have an idea about what it is like to compete with students from different parts of the country.

Yes, there is a quota of JEE Mains in the state colleges of Maharashtra though it is preferable to give MHT-CET for getting into the state government colleges of Maharashtra. If you are seeking admission into COEP you don't have to worry about the branch. Above 200 marks will be sufficient for you.
If you want a core branch such as computer science and engineering, mechanical engineering, electrical
engineering and so on you need marks above 250.
The above cases are for the general student. For an SC and ST student, the cutoff is very low as you do not need to touch even 200 for getting into the CEP as a core streamer.
Same for OBC the cutoff is lower but slightly higher than SC and ST which can be above or around 200 but still have more chances of getting into COEP than a general student.
Now in my personal advice, if you are very much worried and focused about placements, then go for petroleum in COEP. It will make you a millionaire in a very short time but not without hard work.