Hii Harshit,

I would like to inform you about IIT JEE. JEE is a national level entrance examination for students who want themselves to enroll for engineering in IITs and NITs

IIT stands for Indian Institutes of Technology which is central government owned institutes for engineering.

NIT stands for national institute of technology.

These institutes permit admission to students through Jee examination.

JEE is further conducted in two sub categories

1)jee mains 2) jee advanced

Once you clear jee mains you are eligible for jee advanced.

Jee mains is conducted twice a year as of now. After the completion of both the phases Jee advanced is held.

Age criteria for jee mains:- As of now there is no such age criteria for jee mains. But it would be better if you are 17+ at the time of appearing in the examination.

Age criteria for jee advanced:- the upper age limit for jee advance is 25 years. To appear in 2022 examination a candidate must be born on or after 1st october 1997.

Although a relaxation of age criteria has been given to reserved category (sc/st/PwD) of five years i.e( born on or after 1st oct 1992).

Qualification:- To appear in jee mains examination a candidate must have passed 10+2 examination/equivalent in physics, chemistry and mathematics with 75%.

No. Of attempts:- however a candidate can give jee mains examination 6 times. As in 1 year jee mains is conducted twice. So for three years a candidate is eligible to appear.

for more details kindly click on the link given below

https://www.google.com/amp/s/engineering.careers360.com/exams/jee-main/amp