Architecture

Every student who has cleared JEE Mains is eligible for JOSAA counselling. The cutoff is the only eligibility.

No, as JJ College of Architecture is the best college of its kind and you should get around 180 marks for getting into it.

NITs do not take admission on the basis of NATA but yes, through JEE Mains. You'll definitely get an NIT, possibly Trichy or Kozhikode. Moreover, you can also apply for other good colleges as you have enough marks for that.

The following are the colleges or institutes that provide interior designing in Delhi through NATA results:
Pearl Academy
Lisaa School of Design
School of Interior Design
Fine Arts and Interior Design Institute
AD The Design School
AAFT.

The Interior Architecture Degree teaches the students to produce a coordinated and harmonious whole in which the architecture, site, function, and visual aspects of the interior are unified. They also learn about the harmony of colour, texture, lighting, scale, and proportion. The students learn to express joy, gaiety and excitement and to aim at people's hearts and not just their minds.

No, admission in JJ College of Architecture is through your NATA marks and board percentage combined. The average of both will lead your name to their merit list. Also, JEE Mains is not applicable there.

No, your admission in NITs is purely through JEE Mains marks, be it paper one or two. Also, you need to qualify the minimum board percentage too.

Only you need to clear the minimum eligibility for colleges. Mostly, it is 75% for general and around 65% for rest category students (for NITs and rest central government colleges). It may be less for autonomous colleges and private universities, but not more than. Best of luck.

Your approximate home-state rank will be under 250 for sure. (that's in OBC). Best of luck.

For School of planning and architecture Delhi , The highest rank through an SC student can get into is 717 according to 2017 cutoff . So , it's not likely favourable for you . Moreover , kindly use
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=7489993
For any further options.