One thing one should understand before entering the markets is that Markets are not casinos, one should have a realistics target. If one is able to get 100% returns per annum on ones capital on the long run then he has defeated the markets and the best of the world brains by a wide margin.
As your target is 10crore from 25K in 18months , your average compounded monthly return should be 58.532% per month to achieve your target. Impossible - no, difficult- damn difficult(maybe more difficult than winning an Olympic medal). It is the losing trades that you have to take care of because one bad month could take you back many months .
On the other hand if you double your money every year than you would have made 10crores in about 12 years and that would be fantastic.
Even the Richest Man of the Planet the Great Warren Buffet has been able to make a little over 20% annually for the last 50 years. Yes Rakesh Jhunjunwala started with 5000 but it took him over 20 years to make that 1 billion dollar (4500cr). What market gives it takes back very easily, you have to very intelligent to protect your profits because after some success you may have to protect yourself from yourself (fear and greed the biggest traders/investors enemies)
If you are able to acheive your target I think you would be the only one of a kind (one in a Billion Kind of Guy), as your starting capital is not much, I can only say one thing, GO FOR IT!!!!