Topic Details (Notes format)

Which ancient empire built the rock-cut city of Petra in Jordan?

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

Which inventor is known for the phonograph and practical electric light bulb improvements?

Which element has the chemical symbol "Ra"?

What device is used to measure steps walked or run?

Which physicist is known for the Uncertainty Principle in quantum mechanics?

Which part of the brain controls involuntary actions like breathing and heart rate?

Which Roman structure was used for gladiatorial contests, also called the Flavian Amphitheatre?

Which Greek philosopher taught Alexander the Great?

Which Indian river is known as the "Dakshin Ganga"?