In Star Trek, what colour is Mr Spock's blood?
Red | Purple | Blue | Green
When measuring blood pressure, which is the higher number?
Systolic | Diastolic
What colour was the owl and the pussycat's boat?
Apple red | Pea green | Banana yellow | Carrot orange
Is colour blindness more common in men or women?
Men | Women
What colour is a Welsh poppy?
Red | Purple | Blue | Yellow
What colour does litmus paper turn in the presence of acid?
Red | Green | Blue
What colour are copper sulphate crystals?
White | Blue | Yellow | Red