yes food given is free but the quality and quantity of food/snacks for sleeper class travelers have reduced a lot. Hence it's advisable to carry snacks items especially if travelling in a family.
Important Note:This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks. Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.