B.Tech

There is no harm in taking a drop. If you are not satisfied with your score, and you think you can work hard for 1 more year, then take a drop otherwise Manipal University is also good for CSE.

There are so many Government College in each state. You can get admission in those college through state counselling which you can search at the official site of the University of a State, where you want to get in.

Hello dear
Hindustan aerospace & engineering is an institution situated in Pune that offers aircraft maintenance courses. These will not fetch you either B.Tech or B.E degrees since courses offered are not approved by AICTE. But since these are approved by DGCA you get employment opportunities on maint of AC of commercial airlines.
Best wishes!

Yes, it is based on your GATE score but anyway B.E in mechanical might already fetch you good salary package. Fashion technology is somewhat having less scope when compared to mechanical engineering. anyway if you are passionate about you aim, you should join.
Good luck!!

KCET 2018 College Predictor
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https://www.shiksha.com/b-tech/resources/kcet-college-predictor.

Your chances are quite slim. If your CAT score is good, you can consider colleges which give more weightage to CAT score.

What was your marks in JEE Mains, and which city do you belong?