HARD Science Quiz
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Question 1 of 10
Which element has the chemical symbol 'Fe'?
Question 2 of 10
What is the hardest natural substance on Earth?
Question 3 of 10
What is the powerhouse of the cell?
Question 4 of 10
What gas do plants release as a byproduct of photosynthesis?
Question 5 of 10
What is the pH value of pure water at room temperature?
Question 6 of 10
Which scientist developed the theory of general relativity?
Question 7 of 10
What part of the brain controls balance and coordination?
Question 8 of 10
Which particle has a negative electric charge?
Question 9 of 10
What is the second planet from the Sun?
Question 10 of 10
Which planet is known for having the most moons?
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