Which Pittsburgh banker served as U.S. treasury secretary under three presidents and founded the National Gallery of Art?

Called Earth's twin, which planet's surface is hidden by thick clouds of sulfuric acid? In which Jules Verne novel does Captain Nemo finally die, revealing that he is an Indian prince? Caribbean cooks use which fruit to marinate chicken and beef, since its enzyme papain tenderizes meat? Cubby O'Brien, Karen Pendleton and Annette Funicello were among the original cast members known as what? Carpoolers learn patience in the Caldecott Tunnel, linking Alameda and Contra Costa counties in which state? Which idiom meaning to win the prize is what the peasants might have done after Marie Antoinette's supposed remark? Which 1940 Carson McCullers novel follows a Southern girl, Mick Kelly, and a deaf man named John Singer? Carthage was almost totally destroyed; you can find what's left of it in a suburb of which Tunisian capital?