How to become pilot in India with lack of money
Airlines in most countries (outside of US and Canada) usually offer ab initio pilot programs, meaning they will train a pilot with no experience. Training will be paid for in the form of a loan which will be deducted from your future salary. 

However there are some caveats. First, if you fail, you will be responsible for paying off the loan. There is no guarantee you will pass or be offered a job.

Second, these programs are highly competitive. Most programs require a college degree simply due to the number of applicants. Even then, you will have to be high in your class and be the best in all of their tests. I understand typical numbers at European airlines are 1 accepted out of 1,000 applicants.

Some people will suggest the military. Keep in mind that military pilot positions are often equally competitive. In the US, you must have a four year college degree to become a military pilot as well. I believe India is similar to the US as somebody after secondary education may apply to obtain a degree in a military academy, though that is highly competitive in itself.

Therefore, the best way may be to save money and/or get loans and gain your licenses yourself.