Q. In which of the following Harappan sites, Archaeologists has discovered oldest evidence of rice in India?
Answer: Koldihwa
Notes: Excavations at the site of Koldihwa in the Champaran district of Bihar has uncovered rice husk remains dating from 2500 BCE to 1350 BCE making this perhaps the oldest concrete evidence of rice cultivation anywhere in India. Another nearby site of Mahagara shows similar remains dated 2000 BCE affirming the Ganges plains was likely an early region where rice domestication began in the Indian subcontinent.