Who discovered that certain types of chemical reactions produce electricity spontaneously, formalizing electrochemical cells? MCQ with Answer and Explanation

Question

Who discovered that certain types of chemical reactions produce electricity spontaneously, formalizing electrochemical cells?

A. Michael Faraday

B. Georg Ohm

C. Luigi Galvani and Alessandro Volta

D. Humphry Davy

Answer: Option C

Solution (By JKSSB Mock Tests)

Galvani observed muscle contractions from static discharges, and Volta channeled this into the continuous current metallic pile.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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Who discovered that certain elements always react in fixed small whole number proportions by weight, establishing the Law of Definite Proportions?

A. Joseph Proust

B. Antoine Lavoisier

C. Robert Boyle

D. John Dalton

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Correct Answer: Option A

Explanation:
French chemist Joseph Proust proved chemical compounds contain fixed constituent mass ratios, verifying early atomic tracking.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common mechanical transport mechanism known as the bicycle chain drive system was optimized by whom?

A. Wright Brothers

B. Henry Ford

C. Harry John Lawson and John Kemp Starley

D. Karl Benz

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Correct Answer: Option C

Explanation:
Starley engineered the 'Rover Safety Bicycle' in 1885, featuring equal-sized wheels and rear-wheel chain driving mechanisms.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

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Who discovered that electrical currents travel along the exterior surface of a conductor rather than uniformly through its core?

A. Nikola Tesla

B. Michael Faraday

C. Heinrich Hertz

D. James Clerk Maxwell

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Correct Answer: Option B

Explanation:
Michael Faraday discovered the skin effect and structural shielding principles, leading to the creation of the Faraday Cage.

This question belongs to: Static General Knowledge Inventions and Discoveries

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