GENERAL KNOWLEDGE

GK

INVENTIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Radio valve was invented by
A
Adolph Rickenbacker
B
Dr. Wallace H. Carothers
C
Christopher Cockerell
D
David Brewster
Explanation: 

Detailed explanation-1: -On February 28, 1935, Gerard Berchet, under the direction of Carothers, produced a half-ounce of polymer from hexamethylenediamine and adipic acid, creating polyamide 6-6, the substance that would come to be known as Nylon.

Detailed explanation-2: -By 1934, Wallace Carothers had made significant steps toward creating synthetic silk by combining the chemicals amine, hexamethylene diamine, and adipic acid to create a new fiber formed by the polymerizing process and known as a condensation reaction.

Detailed explanation-3: -But he could not overcome depression and felt his scientific career was stagnating despite the fact that he was granted a patent for his method to create those very long chains of polymers on February 16, 1937. That same year, on April 29, Wallace Carothers committed suicide by drinking cyanide with lemon juice.

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