The invention of the common mechanical office typewriter spool ribbon reversal mechanism was patented by whom? MCQ with Answer and Explanation

Question

Share Report Error

The invention of the common mechanical office typewriter spool ribbon reversal mechanism was patented by whom?

A. John Pratt and Franz Xaver Wagner

B. Walter Hunt

C. John Loud

D. Christopher Sholes

Answer: Option A

Solution (By JKSSB Mock Tests)

Wagner patented the front-strike visibility layout and automated ribbon reversing wheels, which Underwood manufactured.

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

Who discovered the planet Uranus in 1781?

A. William Herschel

B. Christiaan Huygens

C. Giovanni Cassini

D. Galileo Galilei

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option A

Explanation:
William Herschel discovered Uranus using a telescope he built himself, making it the first planet discovered in modern history.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

Who invented the high-pressure industrial chemical synthesis of ammonia from raw nitrogen and hydrogen gases?

A. Antoine Lavoisier

B. Fritz Haber and Carl Bosch

C. Wilhelm Ostwald

D. Dmitri Mendeleev

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option B

Explanation:
The Haber-Bosch process synthesized ammonia efficiently on an industrial scale, revolutionizing agricultural fertilizers.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #3

The invention of the common mechanical steel plow configuration that allowed farming in tough prairie soil was engineered by whom?

A. Eli Whitney

B. John Deere

C. Walter Hunt

D. Cyrus McCormick

View Answer & Solution Discuss

Get Complete Subject PDF for Static General Knowledge

Correct Answer: Option B

Explanation:
Blacksmith John Deere designed a highly polished self-scouring steel plow share blade in 1837.

This question belongs to: Static General Knowledge Inventions and Discoveries

Explore All Inventions and Discoveries MCQs