JEE Mains will be conducted 4 times a year from now starting from February to May. The first session will be held from February 23rd to 26th and the next sessions schedule will be announced later on.  The examination will be held in English, Hindi, Bengali, Gujarati, Assamese, Kannada, Marathi, Punjabi, Tamil, Telugu, Urdu, Odia and Malayalam. There is no negative marking for few set of questions. This means,  there will be no negative marking in the 15 alternative questions. The candidates have to attempt 75 questions out of 90  or 25 out of questions 30 in each section of Chemistry, Physics and Mathematics. To qualify for JEE Mains, there is no minimum aggregate criteria. But if you want to join NITs, IIITs or CFTIs then you should score a minimum aggregate of 75% only in your 12th. 11th marks aren't considered. And then to appear for JEE Advanced which is the gateway for admission to IITs, you will need to fulfill the 75% aggregate condition. Now it is 75% for General Category and 65% for Reserved Categories. So how much you score in 12th is what matters to secure your eligibility for NITs, IIITs, CFTIs and JEE Advanced.