Q. When did Hyder Ali became the de-facto ruler of Mysore? Answer:
1763
Notes: In 1763 AD, Hyder Ali became the de-facto ruler of Mysore. He was founder of Mysore as an independent state with its capital Serirangapatnam. With the help of French, he tried to strengthen, organise and discipline his Army. He fought first Anglo Mysore war and died during the second Anglo Mysore war.