If the answer above is None it means there is no specific mention in the legislation, but you still need to ask local law enforcement before drinking in India.
Main article: Alcohol laws of IndiaPurchase age: 18 in Goa, Himachal Pradesh, Karnataka, Sikkim, and Puducherry 21 in Andhra Pradesh, Arunachal Pradesh, Assam, Chhattisgarh, Jammu and Kashmir, Jharkhand, Kerala, Madhya Pradesh, Maharashtra, Mizoram, Orissa (Odisha), Rajasthan, Tamil Nadu, Telangana, Tripura, Uttarakhand, Uttar Pradesh, and West Bengal 25 in Haryana, Meghalaya, Punjab, Delhi Consumption of alcohol is prohibited in the states of Bihar, Gujarat, Lakshadweep, Manipur, and Nagaland.
You can find more legal details and links here:
Wikipedia Legal Drinking Page