Solved MCQs
Answer: C. 1945
UN founded 24 October 1945 after World War II. Currently 193 member states. HQ: New York, USA. Major offices in Geneva, Vienna, Nairobi. UN Day celebrated 24 October every year.
Answer: B. Mongols
Great Wall built over centuries to defend Chinese states from nomadic Mongol invasions from the north. Also defended against Xiongnu. Total length: over 21,000 km across dynasties.
Answer: C. William Shakespeare
Romeo and Juliet written by William Shakespeare (~1594–1596). Most performed play in history. Shakespeare also wrote Hamlet, Macbeth, Othello. Called the 'Bard of Avon'.
Answer: C. Leonardo da Vinci
Mona Lisa painted by Italian Renaissance artist Leonardo da Vinci (~1503–1519). Housed in Louvre Museum, Paris. World's most famous painting. Also known as La Gioconda.
Answer: B. 300,000 km/s
Speed of light in vacuum: ~299,792 km/s (rounded to 300,000 km/s). Symbol: c. Light takes ~8 minutes to travel from Sun to Earth. Fastest possible speed in universe.
Answer: C. Nitrogen
Nitrogen (N₂) makes up ~78% of Earth's atmosphere. Oxygen: ~21%. Argon: ~0.93%. CO₂: ~0.04%. Nitrogen is essential for plant growth and is relatively inert chemically.
Answer: B. 206
Adult human body has 206 bones. Babies born with ~270–300 bones that fuse over time. Largest bone: femur (thigh). Smallest bone: stirrup (stapes) in the ear.
Answer: D. Mars
Mars called Red Planet due to iron oxide (rust) on its surface. 4th planet from Sun. Two moons: Phobos and Deimos. Highest volcano in solar system: Olympus Mons on Mars.