General knowledge

Blood is filtered by which pair of organs?

Which vitamin is abundant in citrus fruits?

What gas do plants absorb from the atmosphere?

Which chemical element is represented by the symbol N?

For what chemical process do plants need sunlight, CO2 and water?

What nationality was Mozart?

What sport is played at Wimbledon?

Which planet is the fifth from the sun?

In which sport was Muhammad Ali the world champion?

Who developed the theory of relativity?

How many rings are there in the Olympic Games symbol?

What is the capital city of Norway?

Which South American country has the greatest land area?

What is the most popular indoor sport in the U.S.A.?