| Hint | Answer | % Correct |
|---|---|---|
| Percussion instrument | Xylophone | 96%
|
| Photograph obtained by electromagnetic radiation | X-ray | 86%
|
| Mistrust or fear of strangers | Xenophobia | 85%
|
| Colorless, odorless gas | Xenon | 81%
|
| Famous photocopy machine | Xerox | 76%
|
| TV singing competition | X Factor | 76%
|
| King of Persia | Xerxes | 55%
|
| Greek letter | Xi | 53%
|
| Woody plant tissue | Xylem | 38%
|
| Brand name of alprazolam | Xanax | 37%
|
| Summer palace of Kublai Khan | Xanadu | 35%
|
| University in Cincinnati, OH | Xavier | 33%
|
| Polysaccharide used as a food additive | Xanthan gum | 16%
|
| Former monetary unit of Vietnam | Xu | 14%
|
| Webcomic created by Randall Munroe | xkcd | 9%
|
| Instrument for measuring color of sea or lake water | Xanthometer | 3%
|