India has 22 scheduled languages - languages in which a candidate can appear in public service exams.
Among this list, the widely spoken mother tongue is as below:-
Hindi is the No.1 mother tongue - 43.63%
Bengali - 8.3%
Marathi - 7.09%
Telugu - 6.93%
Tamil - 6.8%
Gujarati - 6.74%
Urdu - 4.34%
22 scheduled languages -
Hindi, Urdu, Kashmiri, Nepali, Sanskrit
Bengali, Assamese, Manipuri, Odisa
Marathi, Gujarati, Sindhi, Punjabi,
Malayalam, Tamil, Kannada, Telugu, Konkani
Dogri, Maithili, Santali, Bodo
English is the first spoken language to 2.6 lac people, spoken in Maharashtra, followed by Tamil Nadu & Karnataka.
Sanskrit is the least spoken language with 24,821 people listing it as mother tongue.
Among the unscheduled languages, Bhili/Bhilodi is spoken widely by 1.04 crore people.