TS PSC Group 1 Services Prelims 2019 Paper

Which of the following statements regarding the fundamental duties contained in the Constitution of India are correct?
I. Fundamental Duties have formed apart of the Constitution of India since its adoption
II. Fundamental Duties are applicable only to the Citizen of India
III. Fundamental Duties have become a part of the Constitution of India in accordance with the recommendation of the Swaran Singh Committee
IV. Fundamental duties can be enforced through writ jurisdiction