Practice MCQs

Explanation: The Antarctic Desert is the largest desert in the world by area.

Explanation: The Nile River is traditionally considered the longest river in the world.

Explanation: Vatican City is the smallest country in the world by area.

Explanation: Asia is the largest continent both by area and population.

Explanation: Japan is known as the Land of the Rising Sun.

Explanation: The skin is the largest organ of the human body.

Explanation: Diamond is the hardest known natural substance.

Explanation: Albert Einstein developed the theory of relativity.

Explanation: Light travels at approximately 300,000 kilometers per second in a vacuum.

Explanation: Nitrogen makes up about 78% of Earth's atmosphere.