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 discovered the electricity ?
5.None of theseAnswer – 3.Benjamin Franklin
Electricity is a form of energy and it occurs in nature, so it was not “invented.” As to who discovered it, many misconceptions abound. Some give credit to Benjamin Franklin for discovering electricity, but his experiments only helped establish the connection between lightning and electricity, nothing more.
- In 1928 Penicillin was discovered by ………………..
5.None of theseAnswer – 2.Alexander Fleming
Penicillin was discovered in London in September of 1928 by Dr. Alexander Fleming
- Who discovered the insulin for diabetes ?
5.None of theseAnswer – 1.Frederick Banting
Canadian physician Frederick Banting and medical student Charles H. Best discovered the hormone insulin in pancreatic extracts of dogs. On July 30, 1921, they injected the hormone into a diabetic dog and found that it effectively lowered the dog’s blood glucose levels to normal.
- Blood groups were discovered by ………………………
5.None of theseAnswer – 3.Karl Landsteiner
The ABO blood group system is widely credited to have been discovered by the Austrian scientist Karl Landsteiner, who identified the O, A, and B blood types in 1900.
- Which was invented by Evangelista Torricelli ?
5.None of theseAnswer – 4.Barometer
Evangelista Torricelli was an Italian physicist and mathematician, best known for his invention of the barometer, but is also known for his advances in optics and work on the method of Indivisibles
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather.
- ……………was an American physicist known as the inventor of the microwave oven.
1.Ralph H. Baer
5.None of theseAnswer – 2.Percy Lebaron
Percy Lebaron Spencer was an American physicist and inventor. He became known as the inventor of the microwave oven.
- Who invented the Light Emitting Diode(LED) ?
5.None of theseAnswer – 3.Nick Holonyak
Nick Holonyak is an American engineer and educator. He is noted particularly for his 1962 invention of a light-emitting diode that emitted visible red light instead of infrared light.
- Who invented the air conditioners first in 1902 ?
5.None of theseAnswer – 1.Willis Carrier
In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York. After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company.
- Elevator was invented by …………………………
5.None of theseAnswer – 1.Elisha Otis
Elisha Otis, who is generally known as the inventor of the modern elevator. In 1852, Otis came up with a design that had a safety “brake.”
- Which was invented by André-Marie Ampère ?
5.None of theseAnswer – 2.Galvanometer
André-Marie was a French physicist and mathematician who was one of the founders of the science of classical electromagnetism, which he referred to as “electrodynamics”. The SI unit of measurement of electric current, the ampere, is named after him.
A galvanometer is a type of sensitive ammeter. It is an instrument for detecting electric current.