Chelseawolves, to my knowledge and recollection no alcoholic drinks are served on any internal flights in India. However, you do get soft drinks and tea/coffee on a Kingfisher internal flight - we even got (bizarrely) headphones on a one hour flight from Goa to Bombay (tantalisingly over packaged so that from about 6 feet away we were eanticipating fancy bars of chocolate about which we were very excited!).
Food also included - not so good on Kingfisher on a short afternoon flight, but a morning flight included very welcome Danish patries and croissants with some juice