Inventions Which scientist discovered the radioactive element radium? Marie Curie Albert Einstein Isaac Newton Benjamin Franklin Marie Curie Albert Einstein Isaac Newton Benjamin Franklin ANSWER DOWNLOAD EXAMIANS APP
Inventions What Elisha Otis invented? Turbine Hydraulic Crane The brake used in modern elevators Jet Engine Turbine Hydraulic Crane The brake used in modern elevators Jet Engine ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention caused many deaths while testing it? Race cars Ladders Dynamite Parachute Race cars Ladders Dynamite Parachute ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1765 1742 1770 1790 1765 1742 1770 1790 ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Fountain Pen? Lewis E. Waterman Sir Frank Whittle Kirkpatrick Macmillan John J. Loud Lewis E. Waterman Sir Frank Whittle Kirkpatrick Macmillan John J. Loud ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first elevator built? 1785 1760 1743 1739 1785 1760 1743 1739 ANSWER DOWNLOAD EXAMIANS APP
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