Hello Aspirants. Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to Basic GK(Inventions & Inventors) !!!
- Who is the inventor of Thermometer ?
1.Sir Thomas Allbutt
3.Daniel Gabriel Fahrenheit
5.None of theseAnswer – 3.Daniel Gabriel Fahrenheit
Daniel Gabriel Fahrenheit (1686-1736) was the German physicist who invented the alcohol thermometer in 1709, and the mercury thermometer in 1714. In 1724, he introduced the temperature scale that bears his name – Fahrenheit Scale.
- The term “cosmic rays” was coined by ………….. who made measurements of ionization due to cosmic rays from deep under water to high altitudes and around the globe.
5.None of theseAnswer – 2. Robert Millikan
In the 1920s the term “cosmic rays” was coined by Robert Millikan who made measurements of ionization due to cosmic rays from deep under water to high altitudes and around the globe.
Robert A. was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for his measurement of the elementary electronic charge and for his work on the photoelectric effect.
- The Electric motor is invented by ………………….
5.None of theseAnswer – 4.Michael Faraday
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
Michael Faraday was an English scientist who contributed to the fields of electromagnetism and electrochemistry. His main discoveries include those of electromagnetic induction, diamagnetism and electrolysis.
- Who invented the Hydrogen Bomb ?
5.None of theseAnswer – 1.Edward
Edward Teller was a Hungarian-born American theoretical physicist who is known colloquially as “the father of the hydrogen bomb”.
- ……………………………. is the inventor of the electrical Battery
5.None of theseAnswer – 3.Alessandro Volta
Alessandro Volta was an Italian physicist, chemist, and a pioneer of electricity and power, who is credited as the inventor of the electrical battery and the discoverer of methane
- Digital Camera is invented by ……………………….
5.None of theseAnswer – 1.Steven Sasson
Steven Sasson invented the first digital camera atEastman Kodak in 1975. It weighed 8 pounds (3.6 kg) and had only 0.01 megapixels. The image was recorded onto a cassette tape and this process took 23 seconds.
- Inventor of the first artificial Refrigerator is ………………………
1.Wallace H. Coulter
5.None of theseAnswer – 4.William Cullen
Scottish professor William Cullen designed a small refrigerating machine in 1755. Cullen used a pump to create a partial vacuum over a container of diethyl ether, which then boiled, absorbing heat from the surrounding air
- In 1698 which English inventor developed the first steam engine?
5.None of theseAnswer – 3.James Watt
James Watt was a Scottish inventor, mechanical engineer, and chemist whose Watt steam engine, an improvement of the Newcomen steam engine, was fundamental to the changes brought by the Industrial Revolution in the world
- In 1642……………….. inventedand build the first digitalcalculator as a means of helping his father perform tedious tax accounting
5.None of theseAnswer – 1.Blaise Pascal
French Blaise Pascal invented the calculator. He did this to help his dad who was a tax adjuster. Then Gottfried Leibnitz improved on Pascal idea with a machine that would add, subtract, multiply, and divide.
- Who invented the JetEngine ?
4.Ralph H. Baer
5.None of theseAnswer – 2.Frank Whittle
Air Commodore Sir Frank Whittle was an English Royal Air Force(RAF) engineer air officer. He is credited with single-handedly inventing the turbojet engine(1937)