A few sample questions from each category:

SCIENCE

Question: What is the symbol for gold on the Periodic Table of Elements?
Answer: Au.

ARTS & ENTERTAINMENT

Question: What is the date of Elvis Presley's death? Please be specific. Month, date, and year required.
Answer: August 16, 1977.

HISTORY & GEOGRAPHY

Question: What is the state capital of Kentucky? Correct spelling please.
Answer: Frankfort.

CURRENT EVENTS

Question: Former congressman Mark Foley represented which state?
Answer: Florida

SPORTS, LEISURE AND WASHINGTON

Question: Which Nationals player led the team in 2006 in RBIs with 110?
Answer: Ryan Zimmerman