Aadhaar card provides 9 key benefits in India including receiving LPG subsidy, opening a bank account, obtaining a passport, accessing a digital locker, linking voter cards, receiving monthly pensions, obtaining provident funds, digital access to pension information, and enabling investment in stock markets. The document encourages readers to learn more about Aadhaar cards by visiting two specified websites for additional information and details on the uses of Aadhaar cards.