JEE

Click on the link and watch the video till the end to get an idea about how to find the probable list of colleges you might get on the basis of your rank:
https://youtu.be/hOlit6Un7l0

I think, NATA score is needed for the same.

No, you can't. They offer admission through NATA.

For qualifying JEE Mains (which means to be eligible for JEE Advanced) the minimum marks are as follows:
IN 2018:
Common Rank List - 74
OBC-NCL - 45
SC - 29
ST -24
IN 2017
Common Rank List-81
OBC-NCL- 49
SC - 32
ST - 27
Cutoffs for admissions in various NITs, IIITs, are available at:
https://josaa.nic.in/josaaorcrarchieve/Result/OpeningClosingRankArchieveN.aspx?Year=2017
Here you can see the cutoff's ranks for various categories.

To apply for scholarship under Post-matric Scholarship Scheme for SCs/OBCs students, please visit:
http://www.punjabscholarships.gov.into apply for scholarship under Scholarship Scheme for Minorities students, and
Central Sector Scholarship Scheme for College and University students, please visit:
https://www.scholarships.gov.in/To apply for AICTEs scholarship for J & K students, please visit;
http://www.aicte-jk-scholarship-gov.in/.

Hello,
Below is the cutoff for all the categories with opening and closing rank for B.Arch in NIT Rourkela. Please check:
General:
Opening 639
Closing 1712
OBC-NCL
Opening 292
Close 835
SC:
Opening 149
Closing 305
ST:
Opening 28
Closing 135
If your rank satisfies with it you will get the admission.

You can use this link to check your chances of getting admission. This is Shiksha's official college predictor tool based on previous year's data.
https://www.shiksha.com/architecture-planning/colleges/b-arch-colleges-india

Hello,
I hope you are doing well. There is nothing any type of scholarship on the basis of JEE main marks. The college offers scholarships to extra meritorious. Their is also TFWS scheme. Also, Scholarship for students who are under sub category of cast. And EBC scheme is available here. There around 30-40% scholarships available in the colleges.

Uttarakhand Technical University will provide admissions to undergraduate engineering programmes based on the ranks/score secured by the candidates in JEE Main 2017. Thus, it is mandatory for aspirants to appear in the national level undergraduate engineering entrance exam. Hence UKTU required JEE marks and rank.

My friend,
You have received a booklet from ACPC where the merit/Rank of the previous year is given. You should refer to that booklet to know your chances of getting PDPU.