The Prime Minister is the head of the Government and the head of the Council of Ministers. The Prime Minister is appointed by the President on the basis of his being the leader of the majority party in the Lok Sabha. If no party gets an absolute majority in the Lok Sabha or a Prime Minister resigns or dies, the President can use his own discretion in the choice of the Prime Minister. Article 78 stipulates that it is the duty of the Prime Minister (a) to communicate to the President all the decisions takes by the Cabinet and (b) to furnish such information relating to the administration of the Union or any Legislation as the President may call for.
The Prime Minister serves in the office for five years through he can be re-appointed. When the Lok Sabha is dissolved, He can continue in office upon the request of the President. If the Government is defeated in the Lok Sabha, the Prime Minister and the entire cabinet must resign, however, if defeated in the Rajya Sabha, resignation is not obligatory.
- Jawaharlal Nehru was the first Prime Minister and the longest serving so far.
- The first and the ‘only’ acting Prime Minister was Gulzarilal Nanda.
- Lal Bahadur Shastri was the first PM who dead abroad, while in office at Takshent. Gulzarilal Nanda has acted twice as the Prime Minister.
- Chaudhary Charan Singh was the only PM who did not face Parliament, wihle being in office.
- The youngest Prime Minister was Rajeev Gandhi and the oldest Prime Minister was Morarji Desai.
- AB Vajpayee (May 1996-June 1996) government had the shortest tenure (13 days.)
- Legislature of the union is called the Parliament and consists of the Rajya Sabha (Council of States), the Lok Sabha (House of the People) and the President (Article 79).
- The business of Parliament is transacted either in Hindi or in English. However, the Presiding Officers of the two Houses may permit any member to address the House in his/her mother tongue too.