Hi, it depends upon the institution you will opt for. For studying aerospace engg in top IITs you need to first clear JEE MAINS with suitable rank and then need to crack JEE ADVANCED with a rank ranging from 500 to 3000, for aerospace engg.
good colleges can be IIT bombay, IIT kharagpur
here are few links to help-
https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp
JEE Advanced College Predictor https://engineering.careers360.com/jee-advanced-college-predictor?utm_source=qna&utm_medium=jee_adv_cp
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