With 73 marks in the OUAT exam, 77% in 10th, 70% in 12th, and being from the ST category, you have a reasonable chance of securing a government seat in the OUAT (Orissa University of Agriculture and Technology), especially with the ST reservation. However, your chances depend on:

1. The cutoff for your category (ST).

2. The number of seats available and your rank in the exam.

It’s best to keep an eye on the OUAT counseling process and check the previous years' cutoffs for a more accura

te idea.