Diploma

You can't apply in Army Institute of Technology with Diploma. But, if you appear in JEE Mains and score good enough (assuming you as army personnel ward) that ranks under 1 lakh you may get in. All the best.

After completing a Diploma course, you hardly get placement guarantee, placements are generally meant for degree courses.

This is a very college specific question, getting information for this is quite difficult. For exact information, get in touch with the current students through social media or in person.

Aviation is not a specific course. Aviation has many branches. Such as Air Navigation Service, Cabin Crew/ Air Hostess, Cargo Management, Flying/ Pilot Training, Ground Services, Aircraft Maintenance Engineering and Avionics. I'm going to assume that your interest is Cabin Crew/Air Hostess. For this

Can you please mention the academy and course?

Hi,
I see many colleges accepting 10th to pursue Diploma in Aeronauticas, I hope this will help you to make the right decision for your higher studies. All the very best.

First of all, congratulations for your marks in Diploma. Yes, it is possible.

If you want admission in DTU, you need to clear the Leet exam.

It adds up to your qualification, skill, and knowledge. If you are having a Diploma certificate with you, then it will raise you up out of the crowd and will work as a plus for you.