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Q:

In the 1700s,who would pay the postage fee for letters before the stamp was invented?

A) The sender B) There was no fee
C) The receiver of the letter D) The post office

Answer:   C) The receiver of the letter



Explanation:

Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.

Subject: Inventions
Q:

Who invented the Band-aid?

A) Earle Dickson B) Alan Gant
C) Louis Pasteur D) Frank Epperson
 
Answer & Explanation Answer: A) Earle Dickson

Explanation:
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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

Explanation:
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0 165
Q:

Who invented the bifocal glasses?

A) Thomas Alva Edison B) Benjamin franklin
C) Evangelista D) Isaac Newton
 
Answer & Explanation Answer: B) Benjamin franklin

Explanation:
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0 156
Q:

Physical Research Laboratory was founded by ____.

A) S.K. Mitra B) C.V. Raman
C) Homi Bhaba D) Vikram Sarabhai
 
Answer & Explanation Answer: D) Vikram Sarabhai

Explanation:
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0 159
Q:

The first gasoline-run car engine was developed by

 

A) Henry Ford B) Carl Benz
C) Hugh Chalmers D) Horace Elgin Dodge
 
Answer & Explanation Answer: B) Carl Benz

Explanation:
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0 573
Q:

X-Rays, which are now used on a day to day basis for diagnosis in medicine, was discovered by?

A) Wilhelm Rontgen B) Niels Bohr
C) Ernest Rutherford D) Max Bon
 
Answer & Explanation Answer: A) Wilhelm Rontgen

Explanation:
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Q:

Which dynasty had its capital at Chittorgarh?

A) Chauhan B) Sisodia
C) Hada D) Rathor
 
Answer & Explanation Answer: B) Sisodia

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0 234
Q:

Who discovered radioactivity?

A) Max Planck B) James Clerk Maxwell
C) Henri Becquerel D) Heinrich Hertz
 
Answer & Explanation Answer: C) Henri Becquerel

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