Who discovered the link between electricity and magnetism by observing a compass needle deflect near a current-carrying wire in 1820? MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Inventions and Discoveries Questions
Question #1
Report Error
The invention of the common high-pressure kitchen pressure cooker ('Digester') was invented by whom in 1679?
Correct Answer: Option B
Explanation:
French physicist Denis Papin invented the steam digester, which raised boiling temperatures by trapping internal steam pressure.
French physicist Denis Papin invented the steam digester, which raised boiling temperatures by trapping internal steam pressure.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #2
Report Error
Who discovered that stable elements possess unique integer identifiers based on X-ray emission frequencies, restructuring atomic numbers?
Correct Answer: Option D
Explanation:
Moseley proved that ordering chemical elements by nuclear charge (atomic number) resolved inconsistencies in Mendeleev's mass-ordered layout.
Moseley proved that ordering chemical elements by nuclear charge (atomic number) resolved inconsistencies in Mendeleev's mass-ordered layout.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
Question #3
Report Error
The invention of the common household device known as the electric food blender was developed by whom?
Correct Answer: Option B
Explanation:
Poplawski patented the bottom-motor container cutting blender mechanism in 1922 to prepare fountain soda drinks.
Poplawski patented the bottom-motor container cutting blender mechanism in 1922 to prepare fountain soda drinks.
This question belongs to:
Static General Knowledge
Inventions and Discoveries
No comments yet. Be the first to start the discussion!