Diploma

Yes, you can do BCA. The duration is 3 years.

Yes, you can apply for engineering in any university. Your chances is high to get admission in good college, because of your good percentage.

Admission is based on the marks obtained in graduation. Eligible candidates can apply online or offline with required information. Candidate must be a graduate from any recognized university.
For further details regarding this course please refer to the link provided below:
https://www.shiksha.com/mba/course/mba-in-airline-airport-management-aimfill-international-visakhapatnam-179408

Yes, you can get admission for B.Tech lateral entry.

Hello Vishwajeet,
Its always very risky to guess such things since they change from year to year. However I would guess that if you can have percentile of 70 then you would be sure of admission. I am attaching a link that will give you all the required information about admission process. http://www.acpdc.in/.

U are eligible for degree through lateral entry.

It depends on cutoff marks which vary from year to year depending upon toughness of questions and competition.