Andra Pradesh - Telugu and Urdu
Arunachal Pradesh - Miji, Apotanji, Merdukpen, Tagin,Adi, Honpa, Bangini-Nishi.
Assam - Assamese
Bihar - Hindi
Chhattisgarh - Hindi
Goa - Marathi and Konkani
Gujarat - Gujarati
Haryana - Hindi
Himachal Pradesh - Hindi and Pahari
Mizoram - Mizo and English
Jammu & Kashmir - Kashmiri,Dogri, Urdu, Ladakhi, Pahari,Punjabi and Dadri
Jharkhand - Hindi
Karnataka - Kannda
Kerala - Malayalam
Madhya Pradesh - Hindi
Maharashtra - Marathi
Manipur - Manipuri
Meghalaya - Khasi, Jaintia and Garo
Nagaland - Ao, Konyak, Angami, Sema and Lotha
Orissa - Oriya
Punjab - Punjabi
Rajasthan - Rajasthani and Hindi
Sikkim - Bhutia, Hindi, Nepali, Lepcha, Limbu
Tamil Nadu - Tamil
Tripura - Bengali, Tripuri, Manipuri, Kakborak
Uttar Pradesh - Hindi
Uttaranchal - Hindi
West Bengal - Bengali

Read this http://en.wikipedia.org/wiki/Languages_of_India