CBSE

Hi Siddharth,
Yours is a very good profile academically and obtaining a scholarship should't be too difficult. The tricky part here would be to apply to universities on time, note that the sooner you apply higher the chances of receiving an aid from the university. Now when it comes to applying for scholarship they are majorly given on merit and the applicants are selected by the universities on merit basis. Your grades are superb, now you need to prepare an excellent personal statement and some outstanding recommendation letters form your teachers. You really need to do some research here and select the universities where you want to study in, email them and inquire about financial aid prospects, admission inquiries etc. You will find most information easily on any university website. There is a financial aid or tuition section, check those. Besides the universities there are many organizations like FullBright Scholarship, Endeavour Scholarships by the country specific governments to assist bright students like you. Be proactive and use the internet to search more and more information. Dig deeper into the university websites and you will find every detail.
Good luck.