{"references": ["Basu, B; \"An Introduction to Stellar Astrophysics\", PHI Publication (2015).", "Chandrasekhar, S; \"An Introduction to the Study of Stellar Structure\". Dover (1975).", "Chandrasekhar, S; \"On the Maximum of an Ideal White Dwarf\". MNRAS (1936).", "Chandrasekhar, S; \"Ellipsoidal figure of Equilibrium\". Dover (1979).", "Chandrasekhar, S; \"Mathematical Theory of Black-Holes\". Oxford U Press (1982).", "Eddington, A.S; \"The Internal Constitution of the Stars\". Cambridge U Press (1926).", "Fowler, R.H; \"On the Dense Matter\". MNRAS-Letters (1927).", "Oppenheimer, Volkoff; \"On the Maximum of a Massive Neutron Star\", AJP-PRL-B (1988).", "P. Haensel, A.Y. Potekhin, and D.G. Yakovlev; \"Neutron Stars 1 Equation of State and Structure\". Astrophysics & Space Science Library, Springer-Verlag (2007).Chandrasekhar, S; \"On Stars, their structure and Evolution\". Nobel Lecture (1983).", "Shapiro & Tulovsky; \"Black Holes, White Dwarfs and Neutron Stars\". Wiley (2005).", "Weinberg, S; \"Gravitation and Cosmology: Principles & Application of General Theory of Relativity\". Wiley (1995)."]}

In this paper, an exposition has been provided on the structure and evolution of stars based on the major functionality on their initial mass. First, we deal with the role of the radiation pressure and its contribution in the overall equilibrium of the stellar stability, then we discuss about the formation of white dwarfs and Newtonian polytropes, then to Neutron stars and pulsars and finally we touch about the black-hole singularity.