Explanation:

1, 3 and 4

Hall of prayer built by Akbar at Fatehpur Sikri is known as Ibadat Khana." - This statement is correct. Akbar built the Ibadat Khana, or "House of Worship," at Fatehpur Sikri to serve as a place for religious discussions and debates.

"Ibadat Khana was opened to people of Hinduism and Islam only." - This statement is incorrect. Akbar's Ibadat Khana was open to scholars and religious leaders of various faiths, including Hindus, Muslims, Christians, Jains, and others. It was intended to promote religious tolerance and dialogue.

"Policy of 'Sulhe - kul' was based on peace to all." - This statement is correct. Akbar's policy of 'Sulhe - kul' aimed at fostering peace and tolerance among people of different religions and communities. It emphasized a universal and inclusive approach to governance.

"A leading Jain saint, Hira Vijay Suri, spent a couple of years at Akbar's court." - This statement is correct. Hira Vijay Suri, a prominent Jain saint, spent some time at Akbar's court, reflecting the emperor's interest in engaging with scholars from various religious traditions.