Q. Harsha lost to which of the following ruler south of Vindyas?

[A] Dantidurga

[B] Pulikesin II

[C] Vasishta pulomavi

[D] Gautamiputra Satkarni

Answer: B
Notes:

Harsha sought to extend his authority southward into the Deccan. However, the Chalukya king Pulikesin II, who controlled the region, humbled Harsha.  

In commemoration of his victory over Harsha, Pulikesin assumed the title of “Parameswara”. Inscriptions in Pulikesin’s capital Badami attest to this victory. 

Source: Tamil Nadu state board.