In the Vedic Literature, Sabha and Samiti are called two daughters of which deity?

Which of the following is the correct order of the Vedic literature?

Which one of the following Vedic literature talks about salvation :

The river mentioned most in early Vedic literature is :

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

Which Mandala of Rig Veda is completely dedicated to ‘Soma’?