*Important case laws related to Constitution of India:* *1 S.R.Bommai v.UOI:* (1994) Federalism I Secularism Artilcle 356 and floor test. S. R. Bommai case was a landmark judgment of the Supreme Court of India, where the Court discussed provisions of Article 356 of the Constitution of India and related issues. This case had a huge impact on Centre-State Relations. The judgement attempted to curb misuse of Article 356 of the Constitution of India, which allowed President's rule to be imposed on state governments. *2 Samsher Singh v. State of punjab: (1974)* Function of President/Governor with aid and advice of Council of Ministers *3 Maneka Gandhi v. UOI: (1978)* Article 21 Right to travel abroad (Article 14, 19 and 21) *4 Indra Sawhney v. UOI: (1992)* SCC - Mandal Commission *5 C. Golaknath case (1967):* Validity of the First and Seventeenth Amendments and described the scope of Article 13 *6 Kesvananda Bharti case (1973):* Basic Structure of the Indian Constitution *7 Menaka Gandhi case (1978):* Significant towards the transformation of the judicial review *8 Waman Rao Case (1981):* Validity of 9th Schedule.