Famous Battle of ‘Ten Kings’ was fought on the bank of the river -

Which one of the following Brahmana texts belongs to the Rigveda?

Vedic river Askini is identified with which one of the following rivers?

The compilation of which among the following is based upon the Rig Veda?

Who among the following was a Brahmavadini who composed some hymns of the Vedas?

Which one of the following is oldest Veda :