Does a piece of copper metal get heavier or lighter when heated?
Heavier | Lighter
In Star Trek, what colour is Mr Spock's blood?
Blue | Purple | Green | Red
What colour is the blood of cockroaches?
What colour was the owl and the pussycat's boat?
Carrot orange | Apple red | Pea green | Banana yellow
Is colour blindness more common in men or women?
Men | Women
What colour berets do the United Nations peacekeeping forces wear?
What colour is a Welsh poppy?
Yellow | Purple | Blue | Red
What colour does litmus paper turn in the presence of acid?
Blue | Green | Red
What colour is pistachio ice-cream?
In the game of snooker, which colour ball is worth four points?
