CBSE 12th

Your high school grades are more important than 10th grade. You can apply for the admission. But you have to take SAT and TOEFL exam also.

B.Tech is highly efficient after 12th class.

Only the candidates who are eligible for the exam will be able to apply for the test. According to the officials, candidates must have passed 10+2 from any recognised board in India or abroad to be eligible for the test.

Usually, the college considers students having PCB in class 12th for admission in the nutritional programme. The eligibility may vary from institute to institute. Some may consider a non-medical background student also for admission.

Yes, that will be acceptable. If you are preparing for any competitive exam, then you have to attach your gap certificate with your application form. If not, then there's no need of any certificate.

Name the entrance exam that you cleared.

It depends on your entrance results and interviews too.

Hi,
Being currently in class 12th is a golden opportunity to focus on syllabus of class 12th and class 11th and make your concept cystal clear. To clear JEE Mains, you need firstly strive towards concept building and practice McQs daily with speed. Do solve the past years papers of JEE. At times, those are repeated and you'll get an idea, difficulty level and pattern of questions asked.

Hello,
Yes, you can get aerospace engineering through stream 1. Though it's board marks is 88%, you have a fair score in JEE. Wish you all the best.