General Knowledge — Practice Quiz (Set 5)By sushil / October 6, 2026 General Knowledge — Practice Quiz (Set 5) 10 questions · 15 minute time limit Start Quiz You can take this quiz as a guest. Log in first if you want it saved to your progress history. Which organ of the human body is primarily responsible for filtering blood and producing urine? Kidney Liver Lungs Pancreas Which is the longest river in the world? Nile Amazon Yangtze Mississippi Which of the following is the smallest country in the world by land area? Vatican City Monaco San Marino Liechtenstein Which gas do plants primarily absorb from the atmosphere during photosynthesis? Carbon dioxide Oxygen Nitrogen Hydrogen Which continent is the Sahara Desert located in? Africa Asia Australia South America The currency of Japan is known as what? Yen Won Yuan Ringgit Which vitamin is primarily synthesized in the human body through exposure to sunlight? Vitamin D Vitamin C Vitamin A Vitamin B12 Which is the smallest planet in our solar system? Mercury Mars Venus Pluto The Great Wall, one of the most famous ancient structures, is located in which country? China India Egypt Mexico Which organization is the global body governing international trade rules among member countries? World Trade Organization International Monetary Fund World Bank United Nations Submit Quiz
