General Knowledge XII

All kangaroos use their what when they jump?

A scallop has how many eyes - all of them blue?

Australia has the largest sand island in the world, which is it?

During the Middle Ages, you could be accused of witchcraft if your what disobeyed you?

What word is most used in the English language?

Australians are the biggest buyers of what?

How many Australians have died from 1996 to 2015 by watering their x-mas tree with the lights on?

How long is the world's longest human foot?

About what fraction of the oxygen in your bloodstream is used by your brain?

Some toothpaste contains what?

Sigmund Freud had a morbid fear of what?

The average bird's eyes take up what percentage of the space in its skull?

What tool was first used to help knights put on their armour?

Which city's streets were first lit at night by gas on 24th May, 1841?

What is the chief export of Nauru, an island nation in the western Pacific?

In the original comics, Superman's dog was called what?

How much shorter is it driving anticlockwise around Australia than clockwise?

Who went blind studying the sun through telescopes?

Water babies: Baby sea lions have to be taught to do what?

What percentage of the world's gambling machines are in Australia?