NEW DELHI, May 10 -- India's foreign exchange reserves (Forex) fell USD 2.06 billion to USD 686.06 billion in the week that ended on May 2, after extending gains for the eighth straight week, official data released by the Reserve Bank of India (RBI) this week showed. India's Forex rose by USD 1.983 billion to USD 688.129 billion in the week that eneded on April 25. For the reporting week, the foreign currency assets increased USD 514 million to USD 581.177 billion, the apex bank's data shows. The FCAs are the largest components of the foreign exchange reserves which reflects the valuation impact of non-US currencies like euro, pound, and yen kept in the reserves. They are written in the dollar terms. The gold reserves also witnessed a hit...