What is the tallest mountain in the world?

Which is the largest lake in the world by surface area?

Who is known as the 'Father of the Internet'?

Which country is the largest by land area?

Which country introduced the world's first national railway system?

Which planet is known as the "Red Planet"?

The Great Wall of China was primarily built to protect against which threat?

The Universal Declaration of Human Rights was adopted in which year?

Which gas causes the greenhouse effect most significantly among human-made emissions?

What is the capital city of China?

What is the chemical symbol for gold?