Who developed the first successful polio vaccine in 1955? MCQ with Answer and Explanation

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Who developed the first successful polio vaccine in 1955?

A. Edward Jenner

B. Albert Sabin

C. Louis Pasteur

D. Jonas Salk

Answer: Option D

Solution (By JKSSB Mock Tests)

Jonas Salk developed the first successful inactivated polio vaccine (IPV) in 1955, while Albert Sabin later developed the oral polio vaccine.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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

A. Blaise Pascal

B. Gottfried Wilhelm Leibniz

C. Charles Babbage

D. René Descartes

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Correct Answer: Option A

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

Question #2

Who invented the relational database management model (RDBMS), organizing data into structured rows and tables?

A. Bill Gates

B. Alan Turing

C. Larry Ellison

D. Edgar F. Codd

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Correct Answer: Option D

Explanation:
Edgar F. Codd formulated the structural relational database design theory while working at IBM in 1970.

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Question #3

The invention of the wind tunnel for testing aerodynamic structures was first successfully built by whom?

A. Otto Lilienthal

B. Gustave Eiffel

C. Wright Brothers

D. Francis Herbert Wenham

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Correct Answer: Option D

Explanation:
Francis Herbert Wenham designed and operated the first enclosed operational wind tunnel in 1871 for the Aeronautical Society of Great Britain.

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