Question : Who discovered Oxygen?
Option 1: Carl Scheele
Option 2: Hooke
Option 3: Heisenberg
Option 4: Williams
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Correct Answer: Carl Scheele
Solution : The correct option is - Carl Scheele .
Carl Wilhelm Scheele was a Swedish German pharmaceutical chemist.
By heating mercuric oxide, silver carbonate, magnesium nitrate, and other nitrate salts, Scheele discovered oxygen.
He also discovered hydrofluoric, hydrocyanic, and arsenic acids, as well as the organic acids tartaric, oxalic, uric, lactic, and citric.
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Question : Who discovered bacteria?
Option 1: Antonie Van Leeuwenhoek
Option 2: Robert Brown
Option 3: Robert Hooke
Option 4: Robert Koch
Question : Who among the following is popularly known as ' Blade Runner ' ?
Option 1: Usain Bolt
Option 2: Oscar Carl Pistorious
Option 3: Carl Lewis
Option 4: Ben Johnson
Question : Bacteria was first discovered by
Option 1: A.V. Leeuwenhoek
Option 2: Robert hooke
Option 3: Robert Koch
Option 4: Louis Pasteur
Question : Who discovered electron?
Option 1: E. Goldstein
Option 2: J. J. Thomson
Option 3: Ernest Rutherford
Option 4: J. Chadwick
Question : Who discovered electromagnetic nature of light?
Option 1: Snell
Option 2: Newton
Option 3: Maxwell
Option 4: Young
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