As you want to get the list of some of the best scholarship to do B.Tech in Australia so here is the information of the same or you:

AusAID:
This is an Australian Government initiative designed to promote knowledge, education links and enduring ties between Australia and its neighbours.

Rotary Scholarship:
Applicants must initially apply through a Rotary club located in the area of their legal or permanent residence, or place of fulltime study or employment. Persons with disabilities and members of Rotaract clubs are eligible and encouraged to apply.

International Postgraduate Research Scholarships (IPRS):
A total of 330 IPRS places are awarded each year at a cost of around $20m per annum.

The scholarship covers tuition fees and health cover costs for scholarship holders, and health cover costs for their dependants

Endeavour Awards:
It is the Australian Government’s internationally competitive, merit-based scholarship program providing opportunities for citizens of the Asia Pacific, the Middle East, Europe and the Americas to undertake study, research and professional development in Australia.

You need to keep the following ready while applying for Scholarships:
Letters of Recommendation
Transcript
Personal Statement/Essay
Interview