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Q:

Who invented Radio?

A) Grahambell B) Galileo
C) Marconi D) Edison

Answer:   C) Marconi



Explanation:

Guglielmo Marconi, an Italian invetor invented Radio in 1890's.

Subject: Inventions
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Who invented ECG?

A) Hans Berger B) Einthoven
C) G. Bist D) None of the above
 
Answer & Explanation Answer: B) Einthoven

Explanation:
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Q:

Who designed the first electronic computer ENIAC?

A) J presper Eckert and John W Mauchly B) John W Mauchly and Joseph M Jacquard
C) J presper Eckert and Von Neuman D) None of the above
 
Answer & Explanation Answer: A) J presper Eckert and John W Mauchly

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0 193
Q:

Who invented FM radio?

A) Edwin Howard Armstrong B) Thomas Alva Edison
C) Graham Bell D) Galileo
 
Answer & Explanation Answer: A) Edwin Howard Armstrong

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Q:

The credit of inventing the television goes to

A) Philo Farnsworth B) John Logie Baird
C) Charles Francis Jenkins D) None of the above
 
Answer & Explanation Answer: A) Philo Farnsworth

Explanation:

The credit of inventing the television goes to Philo Farnsworth. Electronic television was first successfully demonstrated in San Francisco on Sept. 7, 1927.

 

The_credit_of_inventing_the_television_goes_to1549279715.jpg image

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0 343
Q:

Which among the following is not correctly matched?

A) Parachute: W H carothers B) Barometer: Torricelli
C) Cells: Robert Hooke D) X- Ray: W Roentgen
 
Answer & Explanation Answer: A) Parachute: W H carothers

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1 363
Q:

What did Sir William Herschel discover in 1800?

A) Ultraviolet rays B) Infra-red radiation
C) X rays D) Microwaves
 
Answer & Explanation Answer: B) Infra-red radiation

Explanation:

Sir William Herschel discovered Infra-red radiation in 1800.

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0 352
Q:

In which country the hormone gibberellin was discovered?

A) India B) Japan
C) China D) Russia
 
Answer & Explanation Answer: B) Japan

Explanation:

The hormone gibberellin was discovered in the country Japan.

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Q:

When was the voting machine invented?

A) 1980 B) 1892
C) 1989 D) 1920
 
Answer & Explanation Answer: B) 1892

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