The 42nd Amendment Act is considered to be a milestone in the context of Secularism as well as the Indian Constitution. At the beginning of the Indian Constitution, India was considered to be a Sovereign, Democratic and Republic state. Three words are added through the 42nd Amendment Act namely, ‘Secular’, ‘Socialist’ and ‘Integrity’. These three words have changed the basic structure of the Constitution of India. The phrase ‘Unity of the Nation’ is also changed to ‘Unity and Integrity of the Nation’. India was considered to be a Secular State from the beginning. However, the word ‘Secular’ is added officially to the Constitution of India by the 42nd Amendment Act.