The document Amendment Of Indian Constitution is a part of the Class 8 Course Social Studies (SST) Class 8. Theory of basic structure: a limitation on amending power. The validity of constitution (24th amendment) Act 1971, was challenged in keshvananda bharti vs. state of kerala (AIR 1973 SC 1461). The world’s longest constitution is the Indian’s constitution. At its commencement, it had 395 articles in 22 parts and 8 schedules. It consists of approximately 145,000 words, making it the second largest active constitution in the world. Currently, it has a preamble, 25 parts with 12 schedules, 5 appendices, 448 articles, and 101 amendments. In short, the Indian constitution incorporated the best features of several existing constitutions. Objectives of the Constitution of India. The objectives of the constitution were outlined in the objective Resolution moved by Pt.Jawaharlal Nehru and adopted by the constituent Assembly on January 22, 1947.