If you are looking for previous years NPSC Combined Technical Services Examination (CTSE) Question Papers, then here are the links to view / download the question papers.
NPSC CTSE 2018 Question Papers
NPSC CTSE 2017 Question Papers
NPSC CTSE 2016 Question Papers
NPSC CTSE 2015 Question Papers
Source: npsc.nagaland.gov.in