Adverse posession of govt land

You have the option to file suit based on adverse possession or the claim of adverse possession could be adopted to resist any action to evict.

Incase of govt land am i supposed to prove animus posidenti ?..

Also what are the proofs i can use to show that i have been posessing it since this much time

Contact a local advocate for such guidance for filing a declaration suit, and he may study your claims and documents needed/available with you.

I thought the main purpose of this forum was to make it possible for public to get legal opinion easily without going to local lawyer

You have to prove by the evidence since you are long possession in the land. By relevant records or receipts issued by any govt authority/s