What is the primary function of a rheostat in an electrical circuit?
Controlling Resistance | Generating Electricity | Amplifying Current | Protecting from Overload
What word is the name for a fencing sword and a sheet of thin metal?
Which US chat-show host had an acting role in the film "The Color Purple"?
David Letterman | Jay Leno | Ellen DeGeneres | Oprah Winfrey
Which president is credited with supporting the Argentine Formula 1 Grand Prix circuit opened in 1952?
Néstor Kirchner | Carlos Menem | Raúl Alfonsín | Juan Perón
The Mariana Trench, the deepest point on earth, is located in which ocean?
In which direction does the tail of a comet point as it passes through our solar system?
Towards the sun | Away from the sun
What is the boiling point of helium at standard atmospheric pressure?
0oC | -269oC | -232oC | -153oC
