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Q:

Who dicovered X-rays?

Answer

In 1985 the physicist Wilhelm Rontgen discovered X-rays, the "X" signifying their unknown origin.He later found that the rays could pass through flesh and by using photographic plates could make images of bones inside the body. 

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Q:

Who invented Radar ?

Answer

Robert Watson Watt

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Q:

The cause of Beri Beri was discovered by

A) Eijkman B) Macmillan
C) Alexanderson D) Cockrell
 
Answer & Explanation Answer: A) Eijkman

Explanation:
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Q:

Telegrahic code was introduced by

A) Lipman B) Macmillan
C) Thomas Moore D) Cockrell
 
Answer & Explanation Answer: C) Thomas Moore

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Q:

The Solar System was discoverd by

A) Galleleo B) Finsen
C) Copernicus D) None of these
 
Answer & Explanation Answer: C) Copernicus

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Q:

Who invented the battery?

A) John Wilkinson B) Alessandro Volta
C) James Hargreaves D) Thomas Edison
 
Answer & Explanation Answer: B) Alessandro Volta

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Q:

Toricelli invented

A) Automobile B) Barometer
C) Stethoscope D) None of these
 
Answer & Explanation Answer: B) Barometer

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Q:

Telegrahic code was introduced by

A) Lipman B) Macmillan
C) Thomas Moore D) Cockrell
 
Answer & Explanation Answer: C) Thomas Moore

Explanation:
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