Who invented the relational database management model (RDBMS), organizing data into structured rows and tables? MCQ with Answer and Explanation
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Question #1
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Who invented the first practical modern typewriter with a QWERTY keyboard layout?
Correct Answer: Option C
Explanation:
Christopher Latham Sholes invented the first commercially practical mechanical typewriter and developed the QWERTY keyboard layout to prevent jamming.
Christopher Latham Sholes invented the first commercially practical mechanical typewriter and developed the QWERTY keyboard layout to prevent jamming.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered that plant chromosomes undergo meiosis and crossing over, establishing physical genetic maps?
Correct Answer: Option C
Explanation:
Thomas Hunt Morgan demonstrated chromosome mapping and sex-linked inheritance using Drosophila melanogaster (fruit flies).
Thomas Hunt Morgan demonstrated chromosome mapping and sex-linked inheritance using Drosophila melanogaster (fruit flies).
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common mathematical calculation layout known as the matrix determinants was developed independently by whom?
Correct Answer: Option D
Explanation:
Leibniz and Japanese mathematician Seki Takakazu independently developed algebraic determinant patterns to resolve linear simultaneous groupings.
Leibniz and Japanese mathematician Seki Takakazu independently developed algebraic determinant patterns to resolve linear simultaneous groupings.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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