Which one of the following was the first to be declared as a Central University?

Aligarh Muslim University, Aligarh
Dr. Bhimrao Ambedkar University, Lucknow
Banana Hindu University. Varanasi
University of Allahabad

The correct answer is (d), University of Allahabad. It was established in 1887 as Muir Central College, and was declared a central university in 1921. The other options are:

(a) Aligarh Muslim University, Aligarh: Established in 1875 as Mohammedan Anglo-Oriental College, it was declared a central university in 1920.
(b) Dr. Bhimrao Ambedkar University, Lucknow: Established in 1920 as the University of Lucknow, it was renamed in 1995 after Dr. Bhimrao Ambedkar, the chief architect of the Indian Constitution.
(c) Banaras Hindu University, Varanasi: Established in 1916, it is one of the oldest and most prestigious universities in India. It is not a central university, but a state university.