0 In what year was the first adjustable mechanical alarm clock patented? 1587 1812 1847 1905 Play Now More questions In what state did the Salem Witch Trials of 1692 take place? Play Now Which of these U.S. presidents is not depicted on Mount Rushmore? Play Now Enter your email to see the answer! By subscribing to TriviaTalent you are agreeing to our Privacy Policy and Terms of Use. See Results