Q. Where did Guru Gobind Singh declare Adi Granth as the eternal Guru?
Answer:
Nanded
Notes: In 1708 at Nanded (Hazur Sahib), Guru Gobind Singh declared the Adi Granth as the eternal Guru, terminating the succession of human Gurus. This event is known as Gurgaddi, and the scripture was later called Guru Granth Sahib.