WordNet sense 1 (a set of questions or exercises evaluating skill or knowledge):

exam, test

WordNet sense 2 (formal systematic questioning):

interrogation, interrogatory

WordNet sense 3 (a detailed inspection of your conscience (as done daily by Jesuits)):

examen

WordNet sense 4 (the act of giving students or candidates a test (as by questions) to determine what they know or have learned):

testing

WordNet sense 5 (the act of examining something closely (as for mistakes)):

scrutiny