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Quizzes%WP_TITLE_SEP%Invention Quiz 04
The term radioactivity was coined by:
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Henri Becquerel discovered radioactivity in which year?
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__ invented the first microscope in 1674.
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Who discovered bacteria?
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Who discovered oxygen?
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Who discovered first polio vaccine?
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Who published the first recognizable periodic table?
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In which year Mendeleev gave his periodic table?
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How many elements were present in Mendeleev’s table?
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Who discovered Penicillin?
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