Who invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy? MCQ with Answer and Explanation

Who invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy?
A. James Watt
B. George Stephenson
C. Thomas Newcomen
D. Robert Fulton
Answer: Option B
Solution (By JKSSB Mock Tests)
George Stephenson independently invented a similar safety lamp (Geordie lamp) in 1815, around the exact same time as Davy.

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Practice More Inventions and Discoveries Questions

Question #1
The structure of benzene ring ($C_6H_6$) was discovered by which chemist?
A. Antoine Lavoisier
B. Robert Boyle
C. Dmitri Mendeleev
D. Friedrich August Kekulé

Correct Answer: Option D


Explanation:
Friedrich August Kekulé discovered the ring structure of benzene after famously having a daydream of a snake biting its own tail.

Question #2
Who invented the lithium-ion battery architecture, winning the Nobel Prize in Chemistry in 2019?
A. Gaston Planté
B. Thomas Edison
C. Alessandro Volta
D. John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino

Correct Answer: Option D


Explanation:
These three scientists developed the lightweight, rechargeable, and highly energetic lithium-ion battery technology.

Question #3
Who discovered the radioactive gas Radon in 1900?
A. William Ramsay
B. Ernest Rutherford
C. Marie Curie
D. Friedrich Ernst Dorn

Correct Answer: Option D


Explanation:
Friedrich Ernst Dorn discovered radon while studying the radioactive decay chain of radium emissions.