Posted on June 9, 2025 / 0 / admin 1. Which country is known as the Land of the Rising Sun? Japan China Thailand India 2. Who discovered penicillin? Alexander Fleming Marie Curie Isaac Newton Albert Einstein 3. Which is the longest river in the world? Nile Amazon Yangtze Mississippi 4. What is the hardest natural substance on Earth? Diamond Gold Quartz Iron 5. Which planet has the most moons? Saturn Jupiter Earth Neptune 6. What is the smallest prime number? 2 1 3 0 7. Who painted the Mona Lisa? Leonardo da Vinci Vincent van Gogh Pablo Picasso Michelangelo 8. What is the currency of Brazil? Real Peso Dollar Euro 9. Which ocean is the largest? Pacific Ocean Atlantic Ocean Indian Ocean Arctic Ocean 10. What is the tallest mountain in the world? Mount Everest K2 Kangchenjunga Lhotse 11. Which metal is liquid at room temperature? Mercury Iron Aluminum Lead 12. What language has the most native speakers? Mandarin Chinese English Spanish Hindi 13. Which vitamin is produced in human skin when exposed to sunlight? Vitamin D Vitamin C Vitamin B12 Vitamin A 14. What is the main ingredient in guacamole? Avocado Tomato Onion Cucumber 15. Who is the author of ‘Pride and Prejudice’? Jane Austen Emily Brontë George Eliot Virginia Woolf 16. What is the freezing point of water in Celsius? 0°C 32°C 100°C -10°C 17. Which country hosted the 2016 Summer Olympics? Brazil China UK Russia 18. Which organ purifies our blood? Kidney Lungs Liver Heart 19. What is the largest desert in the world? Antarctic Desert Sahara Gobi Arabian 20. Which is the largest mammal? Blue Whale Elephant Hippopotamus Giraffe Loading … Question 1 of 20 audio