The Ishihara Test is a color perception test used to detect deficiencies for which colors?

More Questions:

What brand of whisky was created in 1939 Queen of England's visit to Canada?

What popular tourist destination is Thailand's largest island?

What mountain chain extends from western Canada down through Northern California?

The English explorer Admiral John Franklin discovered what in the 1840s?

The Bijagos Archipelago lie off which country's mainland?

What is added to bread to make it swell?

In the early 1960's, Marvin Gaye worked as a session drummer for which band?

Which Hollywood film studio's logo is a mountain surrounded by 22 stars?

In Star Trek, what planet is Spock from?

What TV show title character was played by pop singer Brandy?

Who was Germany's first female chancellor?

What Pulitzer Prize-winning journalist was killed during the last months of World War II?

At which castle did the investiture of the Prince of Wales take place in 1969?

What decade saw the first US postage stamp issued?

The Artful Dodger is a character from which novel?