Yes, Nokia 105 does have support for the Punjabi language.
No. Nokia 105 does not have the audio player but it does have FM Radio player.
Yes, this is the Nokia 105 Dual Sim 2017 edition.
Yes, you can save contacts in the Gujarati language in Nokia 105.
Oh yes, Nokia 105 has 2 variants - Single Sim & Dual Sim. So naturally, the dual sim variant does support dual sim.