The invention of the highly efficient multi-plate safety storage match box strip containing antimony trisulfide was pioneered where? MCQ with Answer and Explanation
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Question #1
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Who discovered the fundamental principle of superconduction in metals at temperatures near absolute zero?
Correct Answer: Option B
Explanation:
Heike Kamerlingh Onnes discovered superconductivity in solid mercury cooled to 4.2 Kelvin using liquid helium in 1911.
Heike Kamerlingh Onnes discovered superconductivity in solid mercury cooled to 4.2 Kelvin using liquid helium in 1911.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
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Who discovered the element Sodium through the process of electrolysis?
Correct Answer: Option B
Explanation:
Sir Humphry Davy isolated sodium, potassium, calcium, and magnesium using electrolysis in the early 1800s.
Sir Humphry Davy isolated sodium, potassium, calcium, and magnesium using electrolysis in the early 1800s.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
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The invention of the common lead pencil using graphite strips encased in wooden cylinders was patented in its modern form by whom?
Correct Answer: Option C
Explanation:
Nicolas-Jacques Conté patented the process of mixing powdered graphite with clay and baking it to create modern pencil leads in 1795.
Nicolas-Jacques Conté patented the process of mixing powdered graphite with clay and baking it to create modern pencil leads in 1795.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
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