Inventions Who synthesized the first wholly artificial gene? Benjamin Franklin Meghnad Saha J.J. Thompson Hargobind Khorana Benjamin Franklin Meghnad Saha J.J. Thompson Hargobind Khorana ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1800s 1900s 1890s 1880s 1800s 1900s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear? 1828 1831 1825 There is no sure date 1828 1831 1825 There is no sure date ANSWER DOWNLOAD EXAMIANS APP
Inventions What Thomas Davenport invented? Sleeping (railway) car Chesterfield Screw propellor Electric streetcar Sleeping (railway) car Chesterfield Screw propellor Electric streetcar ANSWER DOWNLOAD EXAMIANS APP
Inventions What plaything was invented by Joe McVicker in 1956? Play-Doh Lite-Brite Etch-A-Sketch Silly Putty Play-Doh Lite-Brite Etch-A-Sketch Silly Putty ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first lawn mower invented? 1849 1854 1830 1835 1849 1854 1830 1835 ANSWER DOWNLOAD EXAMIANS APP
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