Diploma

No, for that you need to pass class 12th either through open or regular school.

Hello Sidana,
If you want to do the Diploma in computer science and it has more scope to get better placement after completion of your graduation. Otherwise, if you study +2 (MPC) after tenth later, you are eligible to do the B.Tech (CSE), By doing +2, you get more knowledge about maths and physics,

Please check the eligibility criteria for getting admission into long distance MBA programmes.
Following is the list of colleges which offer long distance MBA programmes:
Institute of Management Studies (IMT) Ghaziabad.
Symbiosis Center for Distance Learning (SCDL)
Indira Gandhi National Open University

Hello Aadil,
Some companies in India are already in the business of manufacture of assemblies of aircraft in India. These are mostly concentrated around Bangalore and Hyderabad. Tata Technologies, Alpha Systems, Mahindra etc. Also HAL, BEML in PSU category are also employ Diploma holders.

If you are asking engineering, yes you can apply after scoring a minimum cut-off of 60%.