Quiz: You Could Get Into Harvard If You Can Pass This Test

Alexander Graham Bell made the first successful telephone call to his assistant Thomas Watson on March 10, 1876, famously saying, 'Mr. Watson, come here – I want to see you.'

The number 40 is spelled 'forty'. Its letters f-o-r-t-y appear in alphabetical order (f, o, r, t, y). No other number has this property.

The line is from 'Hamlet', Act 3, Scene 1, where Hamlet contemplates life and death. It is one of the most quoted passages in English literature.

The Yangtze River (Chang Jiang) is approximately 6,300 km (3,915 miles) long, making it the longest in Asia and the third-longest in the world.

Michelangelo Buonarroti painted the Sistine Chapel ceiling between 1508 and 1512. The work includes iconic scenes like 'The Creation of Adam'.

The square root of 144 is 12, because 12 × 12 = 144. It is a perfect square.

Au stands for gold, from the Latin word 'aurum'. Gold is a precious metal with atomic number 79.

World War II ended in 1945. The war in Europe ended on May 8 (V-E Day), and the war in Asia ended on September 2 after Japan's surrender.

Jane Austen wrote 'Pride and Prejudice', first published in 1813. It is a classic of English literature, exploring themes of love, class, and reputation.

Ottawa is the capital of Canada. It is located in the province of Ontario, on the Ottawa River. Toronto, Vancouver, and Montreal are larger cities, but Ottawa serves as the political capital.

Mars is called the Red Planet because iron oxide (rust) on its surface gives it a reddish appearance. It is the fourth planet from the Sun.

Diamond is the hardest natural substance. It scores 10 on the Mohs scale of mineral hardness. Diamonds are a form of carbon with a strong crystal lattice.