What Thomas Alva invented?
Phonograph
Revolver
Nuclear reactor
Motion pictures
Who invented Telephone?
J. Walter Hunt
John Logie Baird
Alexander Graham Bell
Wright Brothers
What John Dunlop invented?
Pneumatic tyre
Which among the following invented the motor car?
Karl Benz
Willis Carrier
Who invented the wave nature of light?
Andres Celsius
Archimedes
Thomas Young
Galilieo Galilei
Which one of the following is discovered by Gabriel Fahrenheit?
Fahrenheit temperature scale
The nature of lighting
Tape recorder
Hovercraft
What Archimedes discovered?
How things float
Gravity
Atomic theory
How objects fall
Who invented revolver?
Samuel Colt
Valdemar Paulsen
Who discovered X-rays?
Wilhelm Roentgen
Benjamin Franklin
John Dalton
Which scientist discovered the nature of lighting?
Johannes Kepler
Wilhem Roentgen
