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. Georg Ohm

B. Michael Faraday

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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The blood group system (A, B, O) was discovered by which scientist?

A. Karl Landsteiner

B. William Harvey

C. Edward Jenner

D. Robert Koch

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Correct Answer: Option A

Explanation:
Karl Landsteiner discovered the ABO blood groups in 1900, for which he received the Nobel Prize in Physiology or Medicine in 1930.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that light waves travel as transverse vibrations, contradicting the longitudinal wave model?

A. Christiaan Huygens

B. Augustin-Jean Fresnel and Thomas Young

C. James Clerk Maxwell

D. Isaac Newton

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Correct Answer: Option B

Explanation:
Fresnel and Young demonstrated through polarization experiments that light waves propagate perpendicular to the direction of travel.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

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The invention of the first functional program-controlled electronic binary computing architecture, the EDSAC, was completed where?

A. University of Pennsylvania

B. Harvard University

C. University of Cambridge by Maurice Wilkes

D. Stanford Research Institute

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Correct Answer: Option C

Explanation:
The EDSAC (Electronic Delay Storage Automatic Calculator) performed its first calculation in 1949, applying von Neumann's stored-program architecture.

This question belongs to: Static General Knowledge Inventions and Discoveries

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