Engineering

As per the Institute of Company Secretary of India website, the minimum educational qualification required for Foundation programme is 10+2 or equivalent Hence engineering Diploma students completed after 10th are not eligible for this programme.

You can find it either on JoSAA or CSAB official website. Otherwise, look for CBSE official website. You can find it on any of the sites.

Genetics is a 2 year post graduate degree programme, the minimum eligibility is a Bachelor's degree from a recognised institute or its equivalent exam. Interested candidates can get admission to M.Sc. Genetics course on the basis of candidate's performance in a relevant entrance exam, and subsequent round of counseling. Some colleges like IITs need entrances.

You can wait for 24 hours and can do it again. If you got debited, either the Bank will return you or the bank will pay them within 24 hour. You can call to the helpline number if you have any query.

There is no problem in doing B.Ed.

Yes can get admission. But I think so it is somewhat difficult to do correspondence course in aerospace. you better to consult universities which provides you admission in aerospace department. Because most of the deemed universities provides these type of courses. And mostly Aerospace academy's provides this course. For doing MSc you must and should clear the entrance exam

It is quite difficult to know the exact marks which will get you rank under 20000 as the cutoff changes every year. According to past cutoff data, try to score more than 160 marks in JEE Main to be ranked under 20,000.

Just go through this link and fill out the required details:
https://www.shiksha.com/college-predictor

Just go through this link and fill out the required details:
https://www.shiksha.com/college-predictor