Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1900s 1890s 1880s 1800s 1900s 1890s 1880s ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first elevator built? 1743 1760 1785 1739 1743 1760 1785 1739 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1980s 1950s 1970s 1960s 1980s 1950s 1970s 1960s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Electric Generator? Thomas Alva Edison Michael Faraday Alfred B. Nobel Sir Alexander Graham Bell Thomas Alva Edison Michael Faraday Alfred B. Nobel Sir Alexander Graham Bell ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Diner's Club Discover Visa MasterCharge Diner's Club Discover Visa MasterCharge ANSWER DOWNLOAD EXAMIANS APP
Inventions Who synthesized the first wholly artificial gene? Hargobind Khorana Benjamin Franklin Meghnad Saha J.J. Thompson Hargobind Khorana Benjamin Franklin Meghnad Saha J.J. Thompson ANSWER DOWNLOAD EXAMIANS APP
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