Q. In which years were annual plans first implemented in India?
Answer: 1966 to 1969
Notes: India introduced annual plans during the Plan Holiday period from 1966 to 1969. The government opted for three consecutive annual plans in 1966–67, 1967–68, and 1968–69 after the failure of the Third Five-Year Plan. The annual plans bridged the gap until the Fourth Five-Year Plan began in 1969.