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Extremely Hard Science Quiz Even Einstein would scratch his head!
When was the element hassium discovered?
Lobate Scarps are a feature of which planet?
What is the atomic mass of oxygen?
Which planet is the smallest of the "Gas giants"?
The African and Sumatran species have two horns; the Indian and Javan species have just one. What animals are we discussing?
Longitudinal waves show areas of compression and what else?
What percentage of marine fish species inhabit coral reefs?
How many electrons does carbon have in its outer shell?
Which of these is defined as a chemical substance that consists of just one type of atom?
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Can you beat the score of this nurse?
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Who sang these songs from the 20s?
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Do you remember these old cities?