Question 1

True or false: Enrico Fermi was the lead scientist who designed and built the first nuclear reactor.

Accepted Answer

True. Fermi led the team that created Chicago Pile-1, achieving the first self-sustaining chain reaction on December 2, 1942.

Question 2

True or false: The first nuclear reactor used uranium enriched to over 90% purity.

Accepted Answer

False. Chicago Pile-1 used natural uranium, not enriched, as enrichment technology didn't exist yet.

Question 3

True or false: The first nuclear reactor was originally intended to power a submarine.

Accepted Answer

False. It was built for the Manhattan Project to produce plutonium for atomic bombs, not for naval propulsion.

Question 4

True or false: The first nuclear reactor was built in a secret laboratory beneath a football stadium.

Accepted Answer

True. Chicago Pile-1 was constructed under the stands of Stagg Field, the University of Chicago's football stadium, in 1942.

Question 5

True or false: The first nuclear reactor was built in a desert to contain potential radiation leaks.

Accepted Answer

False. It was built in downtown Chicago under a stadium, not a desert—radiation risks were underestimated at the time.

Question 6

True or false: The first nuclear reactor ran continuously for over a year before being shut down.

Accepted Answer

False. It operated for only about 28 minutes initially, then was shut down and later dismantled after short experimental runs.

Question 7

True or false: The control rods of the first reactor were made of cadmium-coated steel.

Accepted Answer

True. Cadmium absorbs neutrons effectively, so the rods were used to start and stop the chain reaction in Chicago Pile-1.

Question 8

True or false: The first nuclear reactor had no radiation shielding or cooling system.

Accepted Answer

True. Chicago Pile-1 was unshielded and air-cooled, relying on graphite blocks and manual control rods for safety.

First nuclear reactor Trivia Questions