0
Q:

Who discovered Oxygen?

A) Carl Scheele B) Hooke
C) Heisenberg D) Williams

Answer:   A) Carl Scheele



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Subject: Inventions
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Q:

Who invented the Band-aid?

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

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0 224
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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0 197
Q:

Who invented the bifocal glasses?

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

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0 180
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

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0 174
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

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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

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2 151
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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0 257
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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