Inventions What Frank Whittle invented? Sonar Jet propulsion Radar Ethyl gasoline Sonar Jet propulsion Radar Ethyl gasoline ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first elevator built? 1785 1739 1760 1743 1785 1739 1760 1743 ANSWER DOWNLOAD EXAMIANS APP
Inventions When was barb wire patented? 1874 1840 1900 1895 1874 1840 1900 1895 ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the battery? James Hargreaves Thomas Edison John Wilkinson Alessandro Volta James Hargreaves Thomas Edison John Wilkinson Alessandro Volta ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1800s 1890s 1880s 1900s 1800s 1890s 1880s ANSWER DOWNLOAD EXAMIANS APP
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
EXAMIANS