Who invented Bicycle ?
In which decade was the first solid state integrated circuit demonstrated?
1950s
1960s
1970s
1980s
Who invented Electric lamp?
Laennec
John Baird
Thomas Alva Edison
None of these
Which scientist discovered the radioactive element radium?
Isaac Newton
Albert Einstein
Benjamin Franklin
Marie Curie
Who invented Printing press?
Macmillan
Waterman
Gutenberg
none of these
Who invented Radio?
Marconi
Torricelli
This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.
George Washington
Alexander Hamilton
John Adams
Thomas Jefferson
Who is the English physicist responsible for the 'Big Bang Theory'?
Michael Skube
George Gamow
Roger Penrose
What James Watt invented?
Diving bell
Steam boat
Hot air balloon
Rotary steam engine
What J. B. Dunlop invented?
Pneumatic rubber tire
Automobile wheel rim
Rubber boot
Model airplanes