Topic Details (Notes format)

Which vitamin is produced when the human skin is exposed to sunlight?

Which is the second-longest river in Africa after the Nile?

Which chemical reaction in plants uses sunlight to convert carbon dioxide and water into glucose and oxygen?

Which empire was Charlemagne crowned Emperor of in 800 AD?

Which US holiday honors fallen soldiers, observed on the last Monday of May?

Which element has the chemical symbol "Cs"?

Which is the smallest bird in the world?

Which Greek philosopher wrote ‘The Republic,’ describing an ideal state?

Who discovered Hawking radiation?

Which city in Switzerland is known for its medieval clock tower called the Zytglogge?