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saravanakumar
's Polls
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Which scientist discovered the radio active element radium?
Thomas alwa edison
1 vote (14%)
Thomas alwa edison
Lewis edisson waterman
1 vote (14%)
Lewis edisson waterman
Marie curie
4 votes (57%)
Marie curie
Sir frank whittle
1 vote (14%)
Sir frank whittle
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7 votes
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Wolmal
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