3
Q:

In which year was the first solid state integrated circuit demonstrated?

A) 1970s B) 1960s
C) 1950s D) 1980s

Answer:   C) 1950s



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Subject: Inventions
Q:

Who created the first mechanical computer, which proved to be the prototype for future computers?

A) Archimedes B) John Harrison
C) Cai Lun D) Charles Babbage
 
Answer & Explanation Answer: D) Charles Babbage

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Q:

Who Invented Induction Coil?

A) Edwin Howard Armstrong B) John Barber
C) Edwin Beard Budding D) Nicholas Callan
 
Answer & Explanation Answer: D) Nicholas Callan

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Q:

Assembly line was invented by

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

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Q:

Who discovered Circulatory System?

A) Thomas Edison B) William Harvey
C) Robert Hooke D) Robert Boyles
 
Answer & Explanation Answer: B) William Harvey

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Q:

Who discovered Insulin?

A) Sir Alexander Fleming B) Frederick Banting
C) James Watt D) Sir F.G. Hopkins
 
Answer & Explanation Answer: B) Frederick Banting

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Q:

Who invented the hot air balloon?

A) Montgolfier brothers B) Wright brothers
C) Lisitsyn brothers D) Walton brothers
 
Answer & Explanation Answer: A) Montgolfier brothers

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Q:

Who invented the thermos flask?

A) Ray Tomlinson B) Tim Berners-Lee
C) William Cullen D) James Dewar
 
Answer & Explanation Answer: D) James Dewar

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Q:

Who invented radar?

A) Fred Morrison B) A. H. Taylor and Leo C. Young
C) Van Tassel D) W. K. Roentgen
 
Answer & Explanation Answer: B) A. H. Taylor and Leo C. Young

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