Who invented the multi-matrix code known as the QR (Quick Response) Code in 1994? MCQ with Answer and Explanation
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Question #1
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The discovery of the first gas giant exoplanet orbiting a sun-like star (51 Pegasi b) was made by whom?
Correct Answer: Option C
Explanation:
Michel Mayor and Didier Queloz discovered 51 Pegasi b in 1995 using highly precise radial velocity measurements, winning a Nobel Prize.
Michel Mayor and Didier Queloz discovered 51 Pegasi b in 1995 using highly precise radial velocity measurements, winning a Nobel Prize.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered that the chemical element Vanadium exists within iron slag residues, verifying its modern entry?
Correct Answer: Option C
Explanation:
Del Río noticed it early in Mexico ('erythronium'), but Sefström isolated and confirmed the element in Swedish iron ores in 1830.
Del Río noticed it early in Mexico ('erythronium'), but Sefström isolated and confirmed the element in Swedish iron ores in 1830.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The structure of benzene ring ($C_6H_6$) was discovered by which chemist?
Correct Answer: Option B
Explanation:
Friedrich August Kekulé discovered the ring structure of benzene after famously having a daydream of a snake biting its own tail.
Friedrich August Kekulé discovered the ring structure of benzene after famously having a daydream of a snake biting its own tail.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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