JEE is a competitve exam for the entrance in the btech courses in the government colleges in India including IITs, NITs, GFTIs, etc.

It is a test on the basis of Physics, Chemistry and Mathematics in your 11th and 12th science.

It is conducted in two phases one is JEE Main. The exam is of 300 marks with 25 questions from each section making 100 marks per section. Students who have cleared the cutoff ( 40-80 marks depending upon the category) are eligible for the admission process in the NITs, GFTIs and the second phase of the exam, JEE ADVANCED.

Advanced is the exam for admission exclusively to the IITs, and the pattern of the advanced is tentative but it is based on the Physics, Chemistry and Mathematics.

Hello dear student,

JEE mains is  joint entrance examination which is conducted by national testing agency NTA. It is a computer based online test for the students aspiring to pursue under graduation courses in the top institutes of India . The examination is conducted in two sessions and candidates can take the exam either in the month of January or in April. The candidates can further opt to appear for one exam or both the exams. The better of two NTA scores will be considered by the exam conducting authority in preparing the ranks/merit list.

More significantly, students are granted admission to IITs, CFITs, NITs, and other Government funded technical institutes based on the marks obtained in JEE Main. Also, the top 2,50,000 students from JEE Main will qualify to appear for JEE Advanced.

While for more information I am here attaching a link there you can read whatever you want to read about JEE mains . All your doubts will be cleared.

https://engineering.careers360.com/exams/jee-main/articles

Thank you