Can we download whatsapp on ipod 6g?

Care to articulate ?

Yes you can.

No. You can't. Whatsapp is only available for iPhone. It requires an actual cell number, and SMS capability. Both if which the iPod lacks.

Probably. See: http://9to5mac.com/community/how-to-install-and-activate-whatsapp-on-ipod-touch- and-ipad-on-pc-without-jailbreak/

How to download for WhatsApp for iPod touch 6th generation !???

How to download for WhatsApp for iPod touch 6th generation !???

As was said before, its not directly possible to download Whatsapp to an iPod.