Hello Aspirant,

As you are expecting you would get 45-50 marks in JEE mains, your percentile will be around 60-70 and your general rank will be in between 315000-420000. Getting a seat will depend on various factors such as number of students applied for the same branch, performance of the students, category of the students, home state etc.

Use the below link to get list of colleges that you can get based on your rank :

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

check out the previous year's cutoff :

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

You can also check out marks vs rank vs percentile from the below link:

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Hope this information helps you.

Best Wishes!