IIT

Hi Ishaan,
With 9800 rank in JEE Advance, you will get good branches like electrical, mechanical, civil at ISM DHANBAD, IIT BHU. If you get a rank between 6000 to 8000 then you can get IIT Delhi with branches like civil, electrical, mechanical, etc. You should work hard for JEE Advance to get into good IITs.

Hi Sohan,
You have very low chances with this score. Although you should try to participate in the counselling. Lower NITs like NIT Patna, NIT Jalandhar and NIT Jamshedpur provide chances for low rankers in the last round. You can also predict other possible colleges here:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

It does not matter from where you do your schooling (class 5th to 12th). It should be valid by the government. Therefore, if you are an NRI student then you can apply for normal seats.

If you have cleared JEE Mains and Advanced with a good score then you are eligible to apply for IITs and NITs.

Depends on your area you have done, if you go for government college Assistant Prof. gets 70-1.10k salary and private it's all negotiable
if you go for coaching institute, it's tough but you can decide your salary yourself.

It depends upon your branch and the rank in GATE. Year on year cutoff and highest score in GATE is increasing, so it is different but for civil approximately 65-70 marks are for a good IITS.

Hi,
You can get admission in nits through JEE Mains exam and in IITs through JEE Advance exam. If you have appeared in JEE Mains, then you can predict your possible colleges here :
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Hi,
You can get admission in any nits if your board score is above 60 percent. This is only due to placement. Even with 50 percent also you can get admission in NIT, but it will create problems in placement. To get admission in any NIT, you must come under 30,000 in JEE Mains merit list.

7-8 lakh exclusively out of your own pocket.

IITs accept only admission based on JEE Advanced Score. I think you're confused between IITs and IIITs. IIITs take admission if you get good rank in JEE Mains where they do not care about JEE Advanced. IITs are different from IIITs.