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Q:

This statesman,politican,scholar,inventor,and one of early presidents of USA invented the swivel chair,the spherical sundial,the moldboard plow,and the cipher wheel.

A) George Washington B) Alexander Hamilton
C) John Adams D) Thomas Jefferson

Answer:   D) Thomas Jefferson



Explanation:

 Thomas Jefferson (April 13, 1743 – July 4, 1826) was the third President of the United States (1801-1809) and the principal author of the Declaration of Independence (1776).

Subject: Inventions
Q:

Who discovered television?

A) Michael Faraday B) Joseph Henry
C) Abbe Caselli D) John Baird
 
Answer & Explanation Answer: D) John Baird

Explanation:
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Q:

Who invented Dynamite?

A) J B Dunlop B) Alfred Nobel
C) James Simons D) Peter Hargreaves
 
Answer & Explanation Answer: B) Alfred Nobel

Explanation:
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Q:

Who discovered malaria causing germs?

A) Christiaan Bernard B) Charles Louis Alphonse Laveran
C) Dmitry Ivanovsky D) Martinus William Beijerinck
 
Answer & Explanation Answer: B) Charles Louis Alphonse Laveran

Explanation:
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0 10
Q:

Choose the word which is nearest in meaning to the given word ‘EGREGIOUS’

A) Common B) Social
C) Plain D) Atrocious
 
Answer & Explanation Answer: D) Atrocious

Explanation:

Egregious means outstandingly bad or shocking and Atrocious means cruel or wicked and both words are nearly equal in meaning.

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Q:

Who discovered the Cholera causing germ?

A) Filippo Pacini B) Robert Koch
C) M. Laveran D) Felix Hoffman
 
Answer & Explanation Answer: A) Filippo Pacini

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1 43
Q:

Venn diagram was invented by

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

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Q:

Who invented first working laser?

A) A. H. Taylor B) W. K. Roentgen
C) T. H. Maiman D) Fred Morrission
 
Answer & Explanation Answer: C) T. H. Maiman

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0 21
Q:

Seismometer was invented by

A) Alexander Parkes B) Luigi Palmieri
C) Alexey Pajitnov D) Ransom Eli Olds
 
Answer & Explanation Answer: B) Luigi Palmieri

Explanation:
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