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Q:

Who invented the mobile phone?

A) Joseph Wilson B) Edwin Land
C) Martin Cooper D) John Lloyd Wright
 
Answer & Explanation Answer: C) Martin Cooper

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Q:

General anaesthetic was invented by?

A) Alfred P. Southwick B) Isaac Singer
C) Murasaki Shikibu D) Hanaoka Seishū
 
Answer & Explanation Answer: D) Hanaoka Seishū

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Q:

Revolving Door was invented by ________.

A) Lucien Vidi B) John Venn
C) Theophilus Van Kannel D) Lewis Urry
 
Answer & Explanation Answer: C) Theophilus Van Kannel

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Q:

Soda water was invented by

A) Tivadar Puskas B) Joseph Priestley
C) Petrache Poenaru D) James Leonard Plimpton
 
Answer & Explanation Answer: B) Joseph Priestley

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Q:

Who was the invertor of frozen foods?

A) Alfred Nobel B) Clarence Birdseye
C) Frank Whittle D) Ives McGaffey
 
Answer & Explanation Answer: B) Clarence Birdseye

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Q:

Who invented the vacuum pump?

A) Otto von Guericke B) Cai Lun
C) Melitta Bentz D) William Henry Fox Talbot
 
Answer & Explanation Answer: A) Otto von Guericke

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Q:

Who discovered bacteria?

A) Antonie Ven Leeuwenhoek B) Robert Brown
C) Robert Hook D) Robert Koch
 
Answer & Explanation Answer: A) Antonie Ven Leeuwenhoek

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Q:

The first large scale electrical air conditioning was invented and used in 1902 by

A) Willis Carrier B) John Gorrie
C) Stuart Cramer D) H.H. Schultz
 
Answer & Explanation Answer: A) Willis Carrier

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