GK - Inventions and Discoveries
21.
Bacteria was first discovered by
Answer
Antony van Leeuwenhoek is regarded as the father of microbiology. He is known for the discovery of bacteria.
Answer :
Option DExplanation :
Antony van Leeuwenhoek is regarded as the father of microbiology. He is known for the discovery of bacteria.
22.
Who invented ECG?
Answer
Willem Einthoven was a Dutch physician and physiologist. He invented the first practical electrocardiogram (ECG or EKG) in 1895 and received the Nobel Prize in Physiology or Medicine in 1924 for it.
Answer :
Option BExplanation :
Willem Einthoven was a Dutch physician and physiologist. He invented the first practical electrocardiogram (ECG or EKG) in 1895 and received the Nobel Prize in Physiology or Medicine in 1924 for it.
23.
What treat was invented by 11-year-old Frank Epperson in 1905?
Answer
In 1905, 11-year-old Frank Epperson from San Francisco, California, accidentally invented the Popsicle. It was originally called the 'Epsicle' in his honor.
Answer :
Option AExplanation :
In 1905, 11-year-old Frank Epperson from San Francisco, California, accidentally invented the Popsicle. It was originally called the 'Epsicle' in his honor.
24.
Logarithm tables were invented by
Answer
Logarithms were invented independently by John Napier.
Answer :
Option DExplanation :
Logarithms were invented independently by John Napier.
25.
What invention caused many deaths while testing it?
Answer
Many people who tried to test the first parachutes died by jumping from high places. One attempt was a parachute hat, but the inventor broke his neck while testing it. The first successful parachute was tested from a hot air balloon in 1797, in France, by Jacques Garnerin.
Answer :
Option DExplanation :
Many people who tried to test the first parachutes died by jumping from high places. One attempt was a parachute hat, but the inventor broke his neck while testing it. The first successful parachute was tested from a hot air balloon in 1797, in France, by Jacques Garnerin.
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