In which of the following years the Fundamental Duties have been added to the existent Fundamental Rights in the Constitution of India ?

The Fundamental Duties were added to the Constitution of India in 1976 through the 42nd Constitutional Amendment Act [c2][t2]. Originally, the Constitution of 1950 only contained Fundamental Rights and Directive Principles; it did not include a list of duties for citizens. Following the recommendations of the Swaran Singh Committee, which was formed during the National Emergency, the government introduced Part IVA and Article 51A to the Constitution [t4][t6]. This amendment initially incorporated ten fundamental duties, which were later expanded to eleven by the 86th Amendment in 2002 [t4][t7]. The 42nd Amendment is often referred to as the 'Mini-Constitution' due to the extensive changes it brought, including the insertion of these duties to balance the rights of citizens with their obligations toward the state [t4].

Sources

1. [1] Introduction to the Constitution of India, D. D. Basu (26th ed.). > Chapter 8: FUNDAMENTAL RIGHTS AND FUNDAMENTAL DUTIES > Fundamental Duties. > p. 161
2. [2] https://dsel.education.gov.in/sites/default/files/Fundamental-Duties-English.pdf