Which one of the following statements about the Speaker of Lok Sabha is not correct ?

According to Article 94 of the Constitution of India, the Speaker of the Lok Sabha must vacate their office if they cease to be a member of the House [3]. While the Speaker can resign at any time, the resignation letter must be addressed to the Deputy Speaker, not the President of India [3]. Therefore, statement 2 is incorrect. Regarding removal, the Speaker can be removed by a resolution passed by an effective majority, which is a majority of all the then members of the House of the People [4]. Furthermore, if the office of the Speaker falls vacant, the Deputy Speaker is constitutionally mandated to perform the duties of the office [4]. It is important to note that while a panel of chairpersons can preside during the Speaker's absence, they cannot do so when the office is vacant [5].

Sources

1. [1] Laxmikanth, M. Indian Polity. 7th ed., McGraw Hill. > Chapter 23: Parliament > Speaker of Lok Sabha > p. 229
2. [3] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 23: Parliament > Speaker of Lok Sabha > p. 229
3. [2] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 23: Parliament > Deputy Speaker of Lok Sabha > p. 231
4. [4] Laxmikanth, M. Indian Polity. 7th ed., McGraw Hill. > Chapter 23: Parliament > Deputy Speaker of Lok Sabha > p. 231
5. [5] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 23: Parliament > Panel of Chairpersons of Lok Sabha > p. 232