Who discovered ultraviolet radiation in 1801, shortly after Herschel's discovery of infrared? MCQ with Answer and Explanation
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Question #1
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Who discovered that certain elements change identities through radioactive transmutation, establishing the laws of radioactive decay?
Correct Answer: Option A
Explanation:
Rutherford and Soddy formulated the decay transformation principles, proving elements naturally break down into different elements.
Rutherford and Soddy formulated the decay transformation principles, proving elements naturally break down into different elements.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The invention of the common mechanical office device known as the copy mimeograph machine was patented by whom?
Correct Answer: Option B
Explanation:
Edison patented the stencil duplicating device in 1876, which Albert Dick later refined into the widespread commercial mimeograph.
Edison patented the stencil duplicating device in 1876, which Albert Dick later refined into the widespread commercial mimeograph.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered the law of electromagnetic induction in 1831?
Correct Answer: Option B
Explanation:
Michael Faraday discovered electromagnetic induction, leading to the development of electric generators and transformers.
Michael Faraday discovered electromagnetic induction, leading to the development of electric generators and transformers.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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