The Union government is promoting public private partnerships (PPPs) as an effective tool for bringing private-sector efficiencies for delivery of quality public services. India, in recent years, has emerged as one of the leading PPP markets in the world, because of several policy and institutional initiatives taken by the government, said the Union Finance Minister P Chidambaram in Washington.    He was announcing the 'First Closure of Infrastructure Development Finance Company's (IDFC) second Infrastructure Fund.    India has over 1000 PPP projects in the infrastructure sector with a total project cost (TPC) of about $97 billion, the Minister added. IDFC has proved to be a successful initiative of the Government of India and has over the years become one of the key flag bearers of enabling infrastructure development in India.    IDFC is India`s leading integrated infrastructure finance player providing end-to-end infrastructure financing and project implementation services, the Minister said.    Foreign institutional investors have committed $644 million towards first close of its Second India Infrastructure Fund, the Minister said. He expressed a hope to shortly achieve the target size of $1 Billion. This happens to be the second of the Indian Infrastructure Funds that was encouraged by the Government of India in 2008 through a direct commitment of $25 mm.