Article 343 of the Indian Constitution states that the official language of the Union shall be Hindi in Devanagari script.

Article 345 of the Indian Constitution states that English shall be used for communication between the Union and a State which has not adopted Hindi as its official language.

Article 348 of the Indian Constitution states that the Legislature of a State may, by law, adopt any one or more of the languages in use in the State or Hindi as the language or languages to be used for all or any of the official purposes of the State.

Article 349 of the Indian Constitution states that the Legislature of a State may, by law, adopt any one or more of the languages in use in the State or Hindi as the language or languages to be used for all or any of the official purposes of the State.

Article 344 of the Indian Constitution provides for the establishment of a Language Commission to make recommendations on the development of Hindi, the promotion of all Indian languages, and the use of Hindi as the official language of the Union.

Article 350 of the Indian Constitution states that every person shall be entitled to submit a representation for the redress of any grievance to any officer or authority of the Union or a State in any of the languages used in the Union or in the State, as the case may be.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit, and to establish a Central Institute of Indian Languages.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit, and to establish a Central Institute of Indian Languages and a National Translation Mission.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit, and to establish a Central Institute of Indian Languages, a National Translation Mission, and a National Council for Promotion of Urdu Language.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit, and to establish a Central Institute of Indian Languages, a National Translation Mission, a National Council for Promotion of Urdu Language, and a National Institute for Sanskrit.

Article 351 of the Indian Constitution states that it shall be the duty of the Union to promote the spread of Hindi and to develop all Indian languages, including Sanskrit, and to establish a Central Institute of Indian Languages, a National Translation Mission, a National Council for Promotion of Urdu Language, a National Institute for Sanskrit, and a National Academy of Letters.

Article 350 of the Indian Constitution states that every person shall be entitled to submit a representation for the redress of any grievance to any officer or authority of the Union or a State in any of the languages used in the Union or in the State, as the case may be. It also provides for the establishment of a National Commission for Linguistic Minorities.