My name is Tracy, Although I am not from India but would like to give some businesses that work everywhere in the world and are dirt cheap to start with. I have 4 business ideas that I am going to share here.
Pay bills on behalf of busy people's
Find busy peoples in your area, mostly who are on job or people who cannot go to pay bills or even old peoples. Ask them if they need any help with paying bills? If they say yes then charge some fee. This will work the best as long as you will get more and more people.
Share Your Books and charge for it
If you have a good collection of books then rent those books to the people who want to read it. One of my friends did this in our hostel and she managed to earn 100$ and 100$ for a student at that time was a big deal.
Computer Repairing / Game installing / Formatting
Not everyone out there is a computer geek. There are so many people with almost zero knowledge about computers. So you just print some pamphlets distribute them by yourself (to save cost) and wait for the people to contact you.
If you know any computer language also mention it in your pamphlet. If you have computer games then you can also sell it to anyone who want it.
Start a Food stall
If you can cook well then you should definitely start a Food stall. make sure you take permissions with your local authority. The key to success is to sell your food in front of offices and at lunch time. You can also try to sell near parks, metro stations, etc.
I hope this will work for you and you can start a business very soon.