❓ Question 1
How many chromosomes does a human have?
A) 42
B) 44
C) 46
D) 48
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C) 46 – 23 pairs of chromosomes.❓ Question 2
Who discovered the law of universal gravitation?
A) Galileo
B) Newton
C) Einstein
D) Archimedes
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B) Isaac Newton – in 1687.❓ Question 3
Which element is represented by the symbol “O”?
A) Gold
B) Oxygen
C) Osmium
D) Silicon
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B) Oxygen.❓ Question 4
How many planets are officially recognized in the Solar System today?
A) 7
B) 8
C) 9
D) 10
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B) 8 – Pluto lost its planet status in 2006.❓ Question 5
What is the hardest natural substance?
A) Diamond
B) Quartz
C) Graphite
D) Corundum
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A) Diamond – the hardest on the Mohs scale.❓ Question 6
Who invented the first microscope?
A) Leeuwenhoek
B) The Janssen brothers
C) Pasteur
D) Curie
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B) The Janssen brothers – in the late 16th century.❓ Question 7
How many teeth does a normal adult human have?
A) 28
B) 30
C) 32
D) 36
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C) 32 – including wisdom teeth.❓ Question 8
Who developed the theory of relativity?
A) Newton
B) Einstein
C) Faraday
D) Copernicus
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B) Albert Einstein – in the early 20th century.❓ Question 9
Which part of the cell stores genetic information?
A) Ribosomes
B) Nucleus
C) Mitochondria
D) Lysosomes
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B) The cell nucleus.❓ Question 10
Which gas makes up the largest portion of Earth’s atmosphere?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
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C) Nitrogen – about 78%.🎯 Final Challenge
Count how many answers you got right.
👉 Share your score in the comments – let’s see who gets all 10!