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Extremely Hard Science Quiz Even Einstein would scratch his head!
Which of these metals can be added to gold to make 'white gold'?
Which famous scientist first theorized the existence of photons?
What is the rarest penguin in the world?
Which planet is known as The Bringer of Old Age?
What place in the ocean contains the most sea life?
Which of these have a positive charge?
Which planet takes 29 Earth years to orbit the Sun?
What is the pH value of washing soda?
Aoede and Iocaste are moons of which planet?
What type of ocean water is more dense?
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