What is an exclusive news story for a reporter called?

A former DuPont chemist from New Hampshire introduced which brand of food storage containers in 1946? Which lively Spanish dance shares its name with a famous 1928 orchestral work by Maurice Ravel? What is an excess of revenues over expenses called in business? Which war ended with an armistice in November 1918? An executive order dated November 29, 1963, created which investigative body? What is an expensive vessel used for pleasure cruising or racing called, from a Dutch word for "hunt"? In 1985, astronaut Sherwood Spring left which kind of spacecraft to perform spacewalks testing construction in space? What is an expert in Robert's Rules of Order called?