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