The vaccine for smallpox was developed by whom in 1796? MCQ with Answer and Explanation

The vaccine for smallpox was developed by whom in 1796?

A. Edward Jenner

B. Louis Pasteur

C. Robert Koch

D. Alexander Fleming

Answer: Option A

Edward Jenner introduced the smallpox vaccine using cowpox material, pioneering the field of vaccinology.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1 Report Error

Who discovered that solar light presentation presents distinct missing dark absorptive band lines, establishing the Fraunhofer Lines?

A. Robert Bunsen

B. Gustav Kirchhoff

C. Isaac Newton

D. Joseph von Fraunhofer and William Hyde Wollaston

Correct Answer: Option D

Explanation:
Wollaston observed early dark bands, and Fraunhofer mapped over 570 lines precisely using customized optical spectroscopes in 1814.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2 Report Error

Who discovered the first biological enzyme, Diastase, which breaks down starches into sugars?

A. Anselme Payen

B. Hans Krebs

C. Alexander Fleming

D. Louis Pasteur

Correct Answer: Option A

Explanation:
French chemist Anselme Payen isolated diastase from barley malt in 1833, founding the scientific study of enzymes.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

Who invented the printing press with movable type around 1440?

A. Bi Sheng

B. Johannes Gutenberg

C. Leonardo da Vinci

D. William Caxton

Correct Answer: Option B

Explanation:
Johannes Gutenberg introduced movable-type printing to Europe, sparking the Printing Revolution.

This question belongs to: Static General Knowledge Inventions and Discoveries