Q: In the human body, what do the lachrymal glands produce?
What is the answer?

A: tears

Q: From the Greek for a district in Thessaly, what element, whit the atomic number of 12, uses the symbol Mg?
What is the answer?

A: magnesium

Q: What colour sash does Alan Tracy wear in the children's television series 'Thunderbirds'?
What is the answer?

A: white

Q: The Ishihara Test is used for testing for what in humans?
What is the answer?

A:
colour blindness