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Extremely Hard Science Quiz Even Einstein would scratch his head!
Who discovered the electron in 1887?
What name is given to horizontal rows of elements in the Period Table?
What colour is the mineral beryl when it contains chromium?
Pan is a moon of which planet?
Which number group in the Periodic Table contains oxygen?
What year was the first transatlantic fibre-optic cable laid?
What is the rarest penguin in the world?
Which of these is an example of a transverse wave?
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Who sang these famous pop songs?
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Extremely Hard History Quiz, most people score only 3 out of 10.