Fundamental Duties: added to Article 51A by the 42nd Amendment and not enforceable in court

Background

The Constitution as enforced on 26 January 1950 did not mention the duties of citizens.
The Fundamental Duties, ten in number, were added in 1976 by the 42nd Constitutional Amendment, on the recommendations of the Swaran Singh Committee, in Article 51A.
The duty relating to compulsory education for children was incorporated by the 86th Constitutional Amendment in 2002.
They include abiding by the Constitution and respecting the National Flag and National Anthem, protecting the sovereignty, unity and integrity of the nation, safeguarding public property, protecting the environment and striving for excellence.
Unlike Fundamental Rights, which are justiciable, the Fundamental Duties are non-justiciable.