Who discovered that light waves can be deflected and focused by intense gravitational fields, a phenomenon known as gravitational lensing? MCQ with Answer and Explanation
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Question #1
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The invention of the common chemical matchstick containing safer amorphous red phosphorus instead of toxic white phosphorus is called what?
Correct Answer: Option B
Explanation:
John Edvard Lundström developed the commercial safety match in Sweden by putting red phosphorus on the striking strip rather than the match head.
John Edvard Lundström developed the commercial safety match in Sweden by putting red phosphorus on the striking strip rather than the match head.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered that certain types of biological bacteria live completely without oxygen coordinates, establishing anaerobic pathways?
Correct Answer: Option A
Explanation:
Pasteur discovered butyric acid fermentation bacteria in 1861, proving that life can persist without atmospheric oxygen.
Pasteur discovered butyric acid fermentation bacteria in 1861, proving that life can persist without atmospheric oxygen.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the electronic compiler, which translates high-level source code into computer machine language, was achieved by whom?
Correct Answer: Option D
Explanation:
Rear Admiral Grace Hopper created the A-0 compiler in 1951 and was instrumental in developing the COBOL language.
Rear Admiral Grace Hopper created the A-0 compiler in 1951 and was instrumental in developing the COBOL language.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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