Topic Details (Notes format)

Who discovered the first gravitational lens?

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

Which type of electromagnetic radiation has a wavelength shorter than visible light but longer than X-rays?

Which organ in the human body produces bile to aid in fat digestion?

In which layer of Earth do earthquakes primarily occur?

What was the route from Africa to the Americas during the Atlantic slave trade called?

Which strait separates India from Sri Lanka?

Which element has the chemical symbol "Zr"?

Which element is represented by the symbol ‘Hg’ on the periodic table?

Which element has the chemical symbol "Cf"?