Chaudhary Charan Singh served as the sixth Prime Minister of India, albeit for a brief period of time. He was sworn in on July 28, 1979, and was compelled to step down just 170 days.
Pamulaparti Venkata Narasimha Rao served as the 10th Prime Minister of India from June 21, 1991, to May 16, 1996, for a total of 1,791 days. He is best known for ushering the country into an era of economic reforms.
‘Father of the Green Revolution’, Dr Swaminathan played a major role in the set of changes introduced in farming in the 1960s and ‘70s that helped India achieve food security.