At the banks of which of the following rivers was the Battle of Ten Kings fought in the Early Vedic Period?

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

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

Which one of the following is not related to the Rigvedic period?

Which of the following animals was considered as “Aghanya” during the Vedic period:-

Which of the following rivers mentioned in the Rig Veda indicates the relations of Aryans with Afghanistan?