Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1890s 1800s 1880s 1900s 1890s 1800s 1880s ANSWER DOWNLOAD EXAMIANS APP
Inventions What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869? Vacuum cleaner Blender Electric mixer Washing machine Vacuum cleaner Blender Electric mixer Washing machine ANSWER DOWNLOAD EXAMIANS APP
Inventions What furniture item was invented by California furniture designer Charles Prior Hall in 1968? Captain's chair Sofa bed Hammock Waterbed Captain's chair Sofa bed Hammock Waterbed ANSWER DOWNLOAD EXAMIANS APP
Inventions The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name? John Christopher Baxter Jack Croxford Baker Joseph Cyril Bamford John Christopher Ballantyne John Christopher Baxter Jack Croxford Baker Joseph Cyril Bamford John Christopher Ballantyne ANSWER DOWNLOAD EXAMIANS APP
Inventions What Enrico Fermi invented? Nuclear reactor Cyclotron Betatron X ray machine Nuclear reactor Cyclotron Betatron X ray machine ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bicycle? Evangelista Torricelli Leo H Baekeland Karl Benz Kirkpatrick Macmillan Evangelista Torricelli Leo H Baekeland Karl Benz Kirkpatrick Macmillan ANSWER DOWNLOAD EXAMIANS APP
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