Answers

2016-02-03T19:02:08+05:30


1. 

Who invented the BALLPOINT PEN?

A.Biro BrothersB.Waterman BrothersC.Bicc BrothersD.Write Brothers



2. 

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

A.1950sB.1960sC.1970sD.1980s



3. 

What J. B. Dunlop invented?

A.Pneumatic rubber tireB.Automobile wheel rimC.Rubber bootD.Model airplanes



4. 

Which scientist discovered the radioactive element radium?

A.Isaac NewtonB.Albert EinsteinC.Benjamin FranklinD.Marie Curie



5. 

When was barb wire patented?

A.1874B.1840C.1895D.1900



6. 

What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?

A.Charles RichterB.Hiram WalkerC.Giuseppe MercalliD.Joshua Rumble



7. 

What Galileo invented?

A.BarometerB.Pendulum clockC.MicroscopeD.Thermometer



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