Who discovered that blood can be categorized into various Rh factors (positive and negative)? MCQ with Answer and Explanation

Question

Share Report Error

Who discovered that blood can be categorized into various Rh factors (positive and negative)?

A. Edward Jenner

B. William Harvey

C. Robert Koch

D. Karl Landsteiner and Alexander Wiener

Answer: Option D

Solution (By JKSSB Mock Tests)

Karl Landsteiner and Alexander S. Wiener discovered the Rhesus (Rh) factor in blood in 1937.

This question belongs to: Static General Knowledge Inventions and Discoveries

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Inventions and Discoveries Questions

Question #1

Share Report

Who discovered the existence of the atomic nucleus through the famous Gold Foil Experiment?

A. J.J. Thomson

B. John Dalton

C. Niels Bohr

D. Ernest Rutherford

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option D

Explanation:
Ernest Rutherford discovered the dense, positively charged atomic nucleus in 1911 by firing alpha particles at thin gold sheets.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

Share Report

Who discovered the fundamental principle of chemical thermodynamics relating free energy, enthalpy, and entropy?

A. James Joule

B. Sadi Carnot

C. Josiah Willard Gibbs

D. Lord Kelvin

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option C

Explanation:
Josiah Willard Gibbs formulated Gibbs Free Energy ($G = H - TS$), establishing mathematical precision within physical chemistry.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

Share Report

The invention of the mechanical calculating machine named 'Pascaline' in 1642 was completed by whom?

A. René Descartes

B. Gottfried Wilhelm Leibniz

C. Blaise Pascal

D. Charles Babbage

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option C

Explanation:
Blaise Pascal invented the Pascaline to assist his father, a tax commissioner, in performing arithmetic addition and subtraction.

This question belongs to: Static General Knowledge Inventions and Discoveries

Explore All Inventions and Discoveries MCQs