🔬
Science Trivia Questions and Answers
3+ free science trivia questions with answers and explanations.
1What is the chemical formula for water?
ACO2
BH2O✓
CNaCl
DO2
💡 Explanation: Water is H2O — two hydrogen atoms bonded to one oxygen atom. This simple molecule is essential for all life.
2How many bones are in the adult human body?
A186
B206✓
C226
D246
💡 Explanation: The adult human body has 206 bones. Babies are born with around 270-300 bones, which fuse as they grow.
3What planet is closest to the Sun?
AEarth
BMars
CMercury✓
DVenus
💡 Explanation: Mercury is the closest planet to the Sun, orbiting it in just 88 Earth days.
Advertisement
Leaderboard 728×90
About Science Trivia Questions
These science trivia questions cover a wide range of topics within the science category. All questions include four multiple-choice options (A, B, C, D) and a detailed answer explanation to help you understand the topic better.
Want to test yourself in quiz format? Play the interactive Science quiz or download a printable version for offline use.