I would say it's not impossible but at the same time it's quite difficult too without income or credibility. My 2 cents are at your age please concentrate on your education and career. Don't get into the trap of reward points and benefits at this age. Spend your time knowing more about finance for next few years and when you start earning in top 1% of Indian Population in terms of salary most of these (if not all) amazing cards come to you with free of cost.