Who discovered that the atomic mass of elements can vary within the same identity due to changing neutron levels, establishing 'Isotopes'? MCQ with Answer and Explanation
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Question #1
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The invention of the jet engine is attributed to which British engineer?
Correct Answer: Option C
Explanation:
Sir Frank Whittle submitted the first patent for a turbojet engine in 1930, though Germany's Hans von Ohain built the first operational jet plane independently later.
Sir Frank Whittle submitted the first patent for a turbojet engine in 1930, though Germany's Hans von Ohain built the first operational jet plane independently later.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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The term 'vitamin' was coined by which biochemist in 1912?
Correct Answer: Option B
Explanation:
Polish biochemist Casimir Funk coined the term 'vitamine' (later shortened to vitamin) to describe vital amine nutrients.
Polish biochemist Casimir Funk coined the term 'vitamine' (later shortened to vitamin) to describe vital amine nutrients.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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Who discovered that the planet Saturn possesses a second massive satellite moon named Rhea?
Correct Answer: Option C
Explanation:
Cassini discovered Rhea in 1672, alongside Tethys, Dione, and Iapetus, using long focal length aerial telescopes.
Cassini discovered Rhea in 1672, alongside Tethys, Dione, and Iapetus, using long focal length aerial telescopes.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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