The invention of the common mechanical office typewriter correction fluid ('Liquid Paper') was developed by which female innovator? MCQ with Answer and Explanation

Question

The invention of the common mechanical office typewriter correction fluid ('Liquid Paper') was developed by which female innovator?

A. Mary Anderson

B. Bette Nesmith Graham

C. Josephine Cochrane

D. Grace Hopper

Answer: Option B

Solution (By JKSSB Mock Tests)

Graham mixed white tempera paint in a blender in the 1950s to fix her typing errors, later scaling the multi-million-dollar Liquid Paper company.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Question #1

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The invention of the mercury barometric tube directly led to the recognition of what physical condition?

A. Hydrostatic paradox

B. Capillary action

C. Vacuum

D. Absolute humidity

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Correct Answer: Option C

Explanation:
Torricelli's barometer left an empty space at the top of the glass tube, creating the first recognized sustained artificial vacuum.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who invented the fountain pen with an efficient ink capillary feed mechanism in 1884?

A. John Loud

B. Lewis Waterman

C. William Thompson

D. László Bíró

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Correct Answer: Option B

Explanation:
Lewis Edson Waterman patented the first practical fountain pen with a reliable ink feed mechanism.

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Question #3

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The first practical mechanical sewing machine was patented by whom in 1846?

A. Walter Hunt

B. Isaac Singer

C. Eli Whitney

D. Elias Howe

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Correct Answer: Option D

Explanation:
Elias Howe patented the first practical lockstitch sewing machine in the United States in 1846.

This question belongs to: Static General Knowledge Inventions and Discoveries

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