2010 (Paper with Answer Key) :
https://www.scribd.com/doc/313651948/IESO-2010-Paper-answer-key
2011 (Paper with Answer Key) :
https://www.scribd.com/doc/313652221/IESO-2011-Paper-Solution
2012 (Paper) : https://www.scribd.com/doc/313652290/IESO-2012-Paper
2012 (Answer Key) : https://www.scribd.com/doc/313652245/IESO-2012-Answer-Key
2013 (Paper) : https://www.scribd.com/doc/313652894/IESO-2013-Paper
2013 (Answer Key) : https://www.scribd.com/doc/313652890/ieso-2013-answer-key
2014 (Paper) : https://www.scribd.com/doc/313652902/IESO-2014-Paper
2014 (Answer Key) : https://www.scribd.com/doc/313652875/Ieso-2014-Answer-Key
2015 (Paper) : https://www.scribd.com/doc/313652888/IESO-2015-Paper
2015 (Answer Key) : https://www.scribd.com/doc/313652913/IESO-2015-Answer-Key
2016 (Paper with Answer Key) :
2017 (Paper) : https://www.scribd.com/document/398932730/Ieso-Paper-2017
2018 (Paper) : https://www.scribd.com/document/398933754/IESO-2018
Thanks for your efforts for posting the Sample Papers for IESO Exam, this is very useful post to get aware of the question pattern of the exam. Please keep on posting with latest update and other English Olympiad Exams also.
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