What vitamin's principal form is ascorbic acid?

More Questions:

How many dice are used to play Yahtzee?

How many strings does the typical mandolin have?

What popular architect designed the Guggenheim Museum of Modern Art?

Althea Gibson was a pioneering African-American athlete in what sport?

What year was the first iPad released?

What John Steinbeck novel gets its title from a lyric in "The Battle Hymn of the Republic"?

Which novelist sometimes writes under the pseudonym Richard Bachman?

Which stretch of water is Europe's most northern boundary?

Bangladesh is located at the apex of which Bay?

What does Ambidextrous mean?

What actress earned an Oscar nomination for her first screen appearance in "Breaking the Waves"?

Who was shot dead by the FBI after leaving the Biograph Theater on July, 22, 1934?

Which country suffered the most casualties in World War II?

What do koala bears dine on?

Which is the rainiest US state?