Q. Where is India's largest fertilizer factory located?
Answer: Sindri
Notes: The Sindri Fertilizer Plant is in Sindri, Dhanbad district, Jharkhand. It was established in 1951 and operates as one of India's earliest and largest ammonia-urea fertilizer factories. The plant was originally part of Indian Explosives Limited, now Hindalco Industries Limited. Sindri holds historical significance as a pioneering heavy chemical fertilizer unit in India.