Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1880s 1800s 1900s 1890s 1880s 1800s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who among the following invented the small pox vaccine? Louis Pasteur Robert Hooke Edward Jenner Robert Koch Louis Pasteur Robert Hooke Edward Jenner Robert Koch ANSWER DOWNLOAD EXAMIANS APP
Inventions Who developed the idea of Crop Rotation? Cabbage Carlson Potato Peterson Turnip Townsend Swede Svenson Cabbage Carlson Potato Peterson Turnip Townsend Swede Svenson ANSWER DOWNLOAD EXAMIANS APP
Inventions When was Milk Tray first introduced? 1923 1942 1915 1934 1923 1942 1915 1934 ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1770 1790 1742 1765 1770 1790 1742 1765 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which year was MIDI introduced? 1973 1983 1987 1977 1973 1983 1987 1977 ANSWER DOWNLOAD EXAMIANS APP
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