question sheet vs test paper

question sheet

test paper

noun
  • An instrument admitted as a standard or comparison of handwriting in those jurisdictions in which comparison of hands is permitted as a mode of proving handwriting. 

  • a paper submitted by a student for academic examination 

  • a small piece of paper impregnated with a chemical indicator for making qualitative tests 

How often have the words question sheet and test paper occurred in a corpus of books? (source: Google Ngram Viewer )