Which country is famous for the Great Wall?

Who was the first man to walk on the Moon?

How many colors are there in a rainbow?

Which is the smallest country in the world?

Which famous scientist developed the theory of relativity?

Which is the largest ocean on Earth?

Which sport is known as the "king of sports"?

Which is the tallest mountain in the world?

Which gas do humans breathe in for survival?

Which Mughal emperor built the Taj Mahal?