I have a rank of 3lakh in jee and 87% in 12th . Can I get JECRC Jaipur in CSE?

Hey aspirant,
First preference is given to the candidates having their merit in JEE Mains examination conducted by CBSE.
Further vacant seats shall be given on the basis of merit in qualifying examination considering all subjects.

So according to previous year data, I can say that you can surely get admission there but not sure about the branch.
But if you wait till the last round of counselling, you can expect good result.

I hope this will help you out, for further query you can comment below and check out the link given.

https://www.google.com/amp/s/www.careers360.com/university/jecrc-university-jaipur/am

All the best.