Who invented the modern zipper mechanism with interlocking teeth in its final commercial form? MCQ with Answer and Explanation

Who invented the modern zipper mechanism with interlocking teeth in its final commercial form?

A. Whitcomb Judson

B. Elias Howe

C. Walter Hunt

D. Gideon Sundback

Answer: Option D

Gideon Sundback modified earlier primitive clasp locker designs into the modern 'Hookless Fastener' or zipper in 1913.

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. Joseph von Fraunhofer and William Hyde Wollaston

C. Isaac Newton

D. Gustav Kirchhoff

Correct Answer: Option B

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 invented the first practical, safe, non-flickering miner's safety lamp alongside Humphry Davy?

A. Robert Fulton

B. Thomas Newcomen

C. James Watt

D. George Stephenson

Correct Answer: Option D

Explanation:
George Stephenson independently invented a similar safety lamp (Geordie lamp) in 1815, around the exact same time as Davy.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3 Report Error

Who discovered the existence of infrared radiation in sunlight in 1800 using thermometers and a prism?

A. James Clerk Maxwell

B. Heinrich Hertz

C. Johann Wilhelm Ritter

D. William Herschel

Correct Answer: Option D

Explanation:
William Herschel discovered infrared light by measuring the temperature rise just beyond the red end of the visible spectrum.

This question belongs to: Static General Knowledge Inventions and Discoveries