131 seats are reserved for representatives of Scheduled Castes and Scheduled Tribes in Lok Sabha. Some seats are reserved in Lok Sabha for the members of the Scheduled Castes and Scheduled Tribes. As per the order issued by the Delimitation Commission in 2008, 412 are general, 84 seats are reserved for Scheduled Castes, and 47 seats for the Scheduled Tribes. Hence option 3 is correct. Earlier it was 79 and 41 for Scheduled Castes and Scheduled Tribes respectively.

The Preamble has been amended by the 42nd Constitutional Amendment Act (1976), which added three new words—socialist, secular and integrity.

The song Jana-gana-mana, composed originally in Bangla by Rabindranath Tagore, was adopted in its Hindi version by the Constituent Assembly as the National Anthem of India on January 24, 1950.

Answer: A) Directive principle Explanation:

The salary of President of India is discussed here. On September 11, 2008, the Indian government increased the president's salary to 1.5 lakh rupees (approximately to 3.9 lakh in 2022). In India's 2018 Union budget, this compensation was increased to 5 lakh (equivalent to 5.9 lakh in 2023).

Ganesh Mavlankar is considered as the father of Lok Sabha. He was popularly called 'Dada Saheb'. He was the Speaker of the Constituent Assembly (Legislative) and the Provisional Parliament (1947-52). He served as the Speaker of the Bombay Legislative Assembly from 1937 to 1946.

The Indian Constitution has adopted judicial review from the US Constitution.