Theory of evolution was presented by ?
What James Watt invented?
Diving bell
Steam boat
Hot air balloon
Rotary steam engine
Who invented Printing press?
Macmillan
Waterman
Gutenberg
none of these
In which decade was the first solid state integrated circuit demonstrated?
1950s
1960s
1970s
1980s
Which scientist discovered the radioactive element radium?
Isaac Newton
Albert Einstein
Benjamin Franklin
Marie Curie
When was the first elevator built?
1743
1739
1760
1785
What Galileo invented?
Barometer
Pendulum clock
Microscope
Thermometer
Who invented the BALLPOINT PEN?
Biro Brothers
Waterman Brothers
Bicc Brothers
Write Brothers
Who invented Television ?
Who invented Electric lamp?
Laennec
John Baird
Thomas Alva Edison
None of these
