Q. Bring out the only wrong statement:
Answer: All are correct
Notes: The statement "All are correct" is wrong because the Agattiyam is not the first grammar book of the Sangam Age. it is a later work. The earliest known Tamil grammar is Tolkāppiyam, which predates Agattiyam. Kalibangan, part of the Indus Valley Civilization, indeed had early plough fields, and the Mahavamsa does document Chola conquests in Sri Lanka.