Basically, Entering into IITs is never an easy task. But, students with hard work and dedication always make it possible.The process to get into IITs is :

Appearing for JEE Mains Examination :

Students should first appear for JEE Mains.This is a Objective based examination where student will have a stipulated time of 180 minutes, Having 90 questions to attempt.Here every correct answer gives you a score of +4 and negative marking is -1.If you are able to qualify this examination you will get an opportunity to attempt the next level.

Appearing for JEE Advanced :

JEE Advanced consists of two papers.Both are conducted on the same day with the similar time period.The difficulty level is more than the previous level.

If you are able to obtain a good AIR (All India Rank).You can definitely become an IITian.

All the best.

You need to appear for JEE mains and adanced both for securing seat in most coveted IITs.

The eligiblty criteria to appear for both exmas given below:

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

You need valid positive score in JEE mains and amongst top 2.24LAKH studnets including all categories and must have passed 12th with minimum 75% aggregate marks in all ive subjects, as well as should be born on or after Oct 1st, 1993 to be eligible for JEE advanced for IITs.

Registrations for JEE advanced shall open in last week april2018 and exam shall be conduccted in May 20, 2018.

JEE Advanced is the gateway to get admisison in IITs.To make eligible for JEE Advanced exam, Candidates should be among the top 2,24,000 (including all categories) by scoring positive marks in Paper-1 of JEE (Main)

To Appear of JEE Main, Candidates should have taken 5 subject in 12th class & Candidates should have secured at least 75% marks in class 12th exam or be in the top 20 percentile in the class 12th exam conducted by the respective boards.:

1-Language

2-Physics

3-Mathematics

4-Any one of (Chemistry, Biology, Biotechnology, Technical Vocational Subject), 5-Any other subject

JEE Main Exam Pattern (Paper-I):

JEE Main will consist 3 subjects (Physics, Chemistry and Mathematics) and each subject will have 30 questions. Each question will carry 4 marks and 1 mark will deduct for each wrong answer.
in 2017, JEE Main cut off score for JEE Advanced was:

General Category- 81
OBC- 49
SC- 32
ST- 27

JEE Advanced Exam Pattern :

In 2018, JEE Advanced exam will be condcuted in online mode only.
JEE Advanced will have 2 papers and candidates must appear in both the paper.
Both paper I & II will have questions from Physics, Chemistry and Mathematics.
JEE Advanced exam pattern and maximum marks are not fixed and it changes every year.
To get admission in IIT under general cateory, you should score more than 40% marks in JEE Advanced. To get admission in top IITs like Bombay, Madras, Kanpur, Delhi, Karagpur Etc., you should score more than 50% marks in JEE Advanced Paper.


You should focus on JEE Main Preparation now .

Good Luck!!