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. Josephine Cochrane

B. Bette Nesmith Graham

C. Grace Hopper

D. Mary Anderson

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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Who discovered the principles of vaccination, microbial fermentation, and pasteurization?

A. Louis Pasteur

B. Robert Koch

C. Edward Jenner

D. Antonie van Leeuwenhoek

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Correct Answer: Option A

Explanation:
Louis Pasteur's extensive contributions include vaccines for rabies and anthrax, pasteurization, and germ theory breakthroughs.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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Who discovered that biological neural transmission passes across physical cell junctions via specialized chemical messengers, founding Neurotransmission?

A. Camillo Golgi

B. Otto Loewi and Henry Dale

C. Santiago Ramón y Cajal

D. Willem Einthoven

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Correct Answer: Option B

Explanation:
Loewi isolated acetylcholine from frog heart tracking setups, sharing a Nobel Prize with Dale for chemical nerve impulse transmission.

This question belongs to: Static General Knowledge Inventions and Discoveries