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🧠 Daily Knowledge
Weekly General Knowledge Quiz
Saturday, 17 October 2026 · 6 questions · General Knowledge
Question 1 / 6
Which gas is most abundant in Earth’s atmosphere?
Question 2 / 6
Which vitamin is primarily produced in the skin in response to sunlight?
Question 3 / 6
Which organ primarily filters waste from the blood and forms urine?
Question 4 / 6
What is the approximate speed of light in vacuum?
Question 5 / 6
Which blood cells are primarily responsible for fighting infections?
Question 6 / 6