8. Who invented the polio vaccine (oral) ?
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9. Who invented the "Voice Mail"?
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10. Who is the father of cellular phone ?
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11. Which among the following events occurred first ?
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12. Who is known as 'the Father of Geometry' ?
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13. What is the name given to the outermost "planetoid" discovered recently in the Solar System ?
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14. Who introduced the use of artifcial heart for surgery ?
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