To help you in your TISS preparation, we are putting up the 2014, 2016 and 2017 papers for free download. All of these papers have the answers mentioned along with the questions.
Hope this helps! Do share with others if you find it useful.
P.S.: For TISS 2018 aspirants, we have come up a with a mock test series replicating the exact format of TISS NET. The first mock is free to attempt. Check out the details here – TISS Mocks by Learningroots
P.P.S: Do join our Facebook preparation group and discuss with other aspirants here – FB prep group