CBSE 10th

Hi Nishant, there are plenty of colleges. It is difficult to answer which is the best as numerous colleges are located across the entire country. Please go through this site which lists out all the colleges location wise.
http://www.australianuniversities.com.au/colleges/list.php
To further help you out here are the best student cities - Melbourne, Perth, Adelaide, Brisbane, Sydney while few of the quite affordable ones include Wollongong, Canberra and Hobart. Look for colleges in and around these places.
Regards

Dear Deepika, 10th scores come into picture only in case of a tie. So if you have good score you must be good to go. Best Luck.

I don't think you will get an interview call from IIMA. IIMs put a individual score cutoff of 60% for all past academic performance. If you are below that, then you will not be considered for the interview. However IIMs call top 100 students in all streams for the interview, irrespective of their academic performance. Hence if you can secure top 100 rank in CAT, you will get a call from IIMA.

yes u can do it

i think have your own time to seek what do u want in ur life family business or job or if job than what type or in family then join as per that so first look into u than look forward

They look for Maths (along with Physics & Chemistry) in Class XII

Hi
The SAT pattern has changed in May 2016 so you need to apprise yourself of the changed pattern first. The SAT scores are valid for 5 years so yes you can take it in 10th or you may go for PSAT which will prepare you better. Here is the info
http://www.manyagroup.com/psat-pattern