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The discovery of penicillin, the first antibiotic, is attributed to:- a)Alexander Fleming
- b)Louis Pasteur
- c)Edward Jenner
- d)Robert Koch
Correct answer is option 'A'. Can you explain this answer?
The discovery of penicillin, the first antibiotic, is attributed to:
a)
Alexander Fleming
b)
Louis Pasteur
c)
Edward Jenner
d)
Robert Koch
|
Paradigm Institute answered |
Alexander Fleming is credited with the discovery of penicillin. In 1928, while working at St. Mary's Hospital in London, Fleming made a serendipitous discovery. He noticed that a mold called Penicillium notatum had contaminated a petri dish of Staphylococcus bacteria he was studying. To his surprise, he observed that the bacteria near the mold had been killed, while those further away continued to grow.
Recognizing the significance of this observation, Fleming conducted further experiments to isolate and identify the substance produced by the mold. He named it penicillin and recognized its potential as an antibacterial agent.
Although Fleming's initial discovery was important, it was not until the 1940s that penicillin was further developed and produced on a large scale for medical use. Howard Florey and Ernst Chain, along with their team at the University of Oxford, played a crucial role in purifying and testing penicillin, leading to its successful mass production and clinical use as the first widely available antibiotic.
Fleming's discovery of penicillin revolutionized the field of medicine by providing an effective treatment for bacterial infections and paving the way for the development of numerous other antibiotics. His work earned him the Nobel Prize in Physiology or Medicine in 1945, shared with Florey and Chain.
The discovery of penicillin, the first antibiotic, is attributed to:- a)Alexander Fleming
- b)Louis Pasteur
- c)Edward Jenner
- d)Robert Koch
Correct answer is option 'A'. Can you explain this answer?
The discovery of penicillin, the first antibiotic, is attributed to:
a)
Alexander Fleming
b)
Louis Pasteur
c)
Edward Jenner
d)
Robert Koch
|
|
Paradigm Institute answered |
Alexander Fleming is credited with the discovery of penicillin, the first antibiotic. In 1928, Fleming observed that a mold called Penicillium notatum produced a substance that killed bacteria. This accidental discovery led to the development of penicillin as a powerful antibiotic that revolutionized medicine.
Who invented the radio?- a)Thomas Edison
- b)Guglielmo Marconi
- c)Alexander Graham Bell
- d)Nikola Tesla
Correct answer is option 'B'. Can you explain this answer?
Who invented the radio?
a)
Thomas Edison
b)
Guglielmo Marconi
c)
Alexander Graham Bell
d)
Nikola Tesla
|
Catalyst Learningacademy answered |
Guglielmo Marconi is credited with the invention of the radio. In the late 19th century, Marconi developed and demonstrated the first practical system of wireless telegraphy, which eventually led to the development of radio broadcasting and communication.
The discovery of the law of gravitation is attributed to:- a)Isaac Newton
- b)Albert Einstein
- c)Galileo Galilei
- d)Johannes Kepler
Correct answer is option 'A'. Can you explain this answer?
The discovery of the law of gravitation is attributed to:
a)
Isaac Newton
b)
Albert Einstein
c)
Galileo Galilei
d)
Johannes Kepler
|
|
Paradigm Institute answered |
Isaac Newton is attributed with the discovery of the law of gravitation. His law of universal gravitation explains the force of gravity between objects and is one of the fundamental laws of physics.
The light bulb was invented by:- a)Isaac Newton
- b)Benjamin Franklin
- c)Thomas Edison
- d)Albert Einstein
Correct answer is option 'C'. Can you explain this answer?
The light bulb was invented by:
a)
Isaac Newton
b)
Benjamin Franklin
c)
Thomas Edison
d)
Albert Einstein
|
|
Catalyst Learningacademy answered |
Thomas Edison is credited with inventing the practical incandescent light bulb. Although there were previous inventors who developed early versions of electric lighting, Edison's design was the first commercially successful and long-lasting light bulb. He patented his invention in 1879.
The discovery of the theory of evolution is attributed to:- a)Charles Darwin
- b)Gregor Mendel
- c)Louis Pasteur
- d)Alfred Wegener
Correct answer is option 'A'. Can you explain this answer?
The discovery of the theory of evolution is attributed to:
a)
Charles Darwin
b)
Gregor Mendel
c)
Louis Pasteur
d)
Alfred Wegener
|
|
Catalyst Learningacademy answered |
Charles Darwin is credited with the discovery of the theory of evolution. In his book "On the Origin of Species" published in 1859, Darwin proposed the concept of natural selection, which explained how species evolve and adapt to their environments over time.
Who is credited with the invention of the telephone?- a)Thomas Edison
- b)Alexander Graham Bell
- c)Nikola Tesla
- d)Guglielmo Marconi
Correct answer is option 'B'. Can you explain this answer?
Who is credited with the invention of the telephone?
a)
Thomas Edison
b)
Alexander Graham Bell
c)
Nikola Tesla
d)
Guglielmo Marconi
|
|
Catalyst Learningacademy answered |
Alexander Graham Bell is credited with inventing the telephone. He was an inventor, scientist, and teacher of the deaf. Bell's work on the telephone was influenced by his research on telegraphy and speech. On March 10, 1876, Bell successfully transmitted the first intelligible telephone message to his assistant, Thomas Watson.
The discovery of the polio vaccine is credited to:- a)Jonas Salk
- b)Alexander Fleming
- c)Louis Pasteur
- d)Robert Koch
Correct answer is option 'A'. Can you explain this answer?
The discovery of the polio vaccine is credited to:
a)
Jonas Salk
b)
Alexander Fleming
c)
Louis Pasteur
d)
Robert Koch
|
|
Catalyst Learningacademy answered |
Jonas Salk is credited with the discovery of the polio vaccine. In the early 1950s, Salk developed a killed-virus vaccine for polio, which effectively prevented the disease. His work played a crucial role in the eventual eradication of polio in many parts of the world.
Who is credited with the invention of the steam engine?- a)Thomas Edison
- b)James Watt
- c)George Stephenson
- d)Nikola Tesla
Correct answer is option 'B'. Can you explain this answer?
Who is credited with the invention of the steam engine?
a)
Thomas Edison
b)
James Watt
c)
George Stephenson
d)
Nikola Tesla
|
|
Paradigm Institute answered |
James Watt is credited with significant improvements to the steam engine, making it more efficient and practical for various applications. Although steam engines were developed earlier by other inventors, Watt's contributions, including the separate condenser and rotary motion mechanisms, greatly enhanced their efficiency and usefulness.
Who invented the World Wide Web (WWW)?- a)Tim Berners-Lee
- b)Bill Gates
- c)Steve Jobs
- d)Mark Zuckerberg
Correct answer is option 'A'. Can you explain this answer?
Who invented the World Wide Web (WWW)?
a)
Tim Berners-Lee
b)
Bill Gates
c)
Steve Jobs
d)
Mark Zuckerberg
|
|
Catalyst Learningacademy answered |
Tim Berners-Lee is credited with inventing the World Wide Web (WWW). In 1989, while working at CERN, the European Particle Physics Laboratory, Berners-Lee developed the foundational technologies and protocols that allowed for the creation of the web as we know it today.
Who invented the printing press?- a)Johannes Gutenberg
- b)Leonardo da Vinci
- c)Benjamin Franklin
- d)Isaac Newton
Correct answer is option 'A'. Can you explain this answer?
Who invented the printing press?
a)
Johannes Gutenberg
b)
Leonardo da Vinci
c)
Benjamin Franklin
d)
Isaac Newton
|
|
Paradigm Institute answered |
Johannes Gutenberg is credited with inventing the printing press. In the 15th century, Gutenberg developed a movable type printing press that revolutionized the production of books. His invention enabled the mass production of printed materials and significantly contributed to the spread of knowledge and the Renaissance.
Who developed the theory of relativity?- a)Isaac Newton
- b)Albert Einstein
- c)Galileo Galilei
- d)Marie Curie
Correct answer is option 'B'. Can you explain this answer?
Who developed the theory of relativity?
a)
Isaac Newton
b)
Albert Einstein
c)
Galileo Galilei
d)
Marie Curie
|
|
Paradigm Institute answered |
Albert Einstein developed the theory of relativity. His groundbreaking work on special relativity (1905) and general relativity (1915) revolutionized our understanding of space, time, and gravity. Einstein's theory of relativity introduced the famous equation E=mc², which relates mass and energy.
The discovery of gravity is associated with:- a)Isaac Newton
- b)Albert Einstein
- c)Galileo Galilei
- d)Johannes Kepler
Correct answer is option 'A'. Can you explain this answer?
The discovery of gravity is associated with:
a)
Isaac Newton
b)
Albert Einstein
c)
Galileo Galilei
d)
Johannes Kepler
|
|
Catalyst Learningacademy answered |
Isaac Newton is associated with the discovery of gravity. His law of universal gravitation, published in 1687, described the force of gravity and its effect on objects. Newton's work laid the foundation for understanding the motion of celestial bodies and the laws governing the physical universe.
The Wright brothers are known for inventing the:- a)Automobile
- b)Telephone
- c)Television
- d)Airplane
Correct answer is option 'D'. Can you explain this answer?
The Wright brothers are known for inventing the:
a)
Automobile
b)
Telephone
c)
Television
d)
Airplane
|
|
Catalyst Learningacademy answered |
The Wright brothers, Orville and Wilbur Wright, are known for inventing and building the world's first successful airplane. On December 17, 1903, they achieved the first controlled, sustained flight of a powered aircraft in Kitty Hawk, North Carolina.
The first person to walk on the moon was:- a)Yuri Gagarin
- b)Neil Armstrong
- c)Buzz Aldrin
- d)Alan Shepard
Correct answer is option 'B'. Can you explain this answer?
The first person to walk on the moon was:
a)
Yuri Gagarin
b)
Neil Armstrong
c)
Buzz Aldrin
d)
Alan Shepard
|
|
Catalyst Learningacademy answered |
Neil Armstrong, an American astronaut, was the first person to walk on the moon. On July 20, 1969, as part of NASA's Apollo 11 mission, Armstrong took the historic "giant leap for mankind" and became the first human to set foot on the lunar surface.
The discovery of the structure of DNA is credited to:- a)Rosalind Franklin
- b)Marie Curie
- c)James Watson and Francis Crick
- d)Gregor Mendel
Correct answer is option 'C'. Can you explain this answer?
The discovery of the structure of DNA is credited to:
a)
Rosalind Franklin
b)
Marie Curie
c)
James Watson and Francis Crick
d)
Gregor Mendel
|
|
Paradigm Institute answered |
James Watson and Francis Crick, along with Maurice Wilkins, are credited with the discovery of the structure of DNA. In 1953, Watson and Crick proposed the double helix structure of DNA, which explained how genetic information is stored and transmitted in living organisms.
Who is known for discovering the laws of motion?- a)Isaac Newton
- b)Galileo Galilei
- c)Albert Einstein
- d)Nikola Tesla
Correct answer is option 'A'. Can you explain this answer?
Who is known for discovering the laws of motion?
a)
Isaac Newton
b)
Galileo Galilei
c)
Albert Einstein
d)
Nikola Tesla
|
|
Paradigm Institute answered |
Isaac Newton is known for discovering the laws of motion. His three laws of motion, published in his work "Mathematical Principles of Natural Philosophy" in 1687, describe the relationship between forces acting on objects and their resulting motion. Newton's laws form the foundation of classical mechanics.
The invention of the electric telegraph is associated with:- a)Samuel Morse
- b)Alexander Graham Bell
- c)Guglielmo Marconi
- d)Thomas Edison
Correct answer is option 'A'. Can you explain this answer?
The invention of the electric telegraph is associated with:
a)
Samuel Morse
b)
Alexander Graham Bell
c)
Guglielmo Marconi
d)
Thomas Edison
|
|
Paradigm Institute answered |
The invention of the electric telegraph is associated with Samuel Morse. In the 1830s, Morse developed a practical system of telegraphy that used electrical signals to transmit messages over long distances. He also invented Morse code, a series of dots and dashes used to represent letters and numbers in telegraph communication.
Who is credited with the invention of the computer?- a)Charles Babbage
- b)Nikola Tesla
- c)Thomas Edison
- d)Bill Gates
Correct answer is option 'A'. Can you explain this answer?
Who is credited with the invention of the computer?
a)
Charles Babbage
b)
Nikola Tesla
c)
Thomas Edison
d)
Bill Gates
|
|
Catalyst Learningacademy answered |
Charles Babbage is credited with the invention of the computer. Although Babbage's designs for mechanical computers were not fully realized during his lifetime, his analytical engine concept laid the foundation for modern computer architecture and programming.
The first person to reach the summit of Mount Everest was:- a)Sir Edmund Hillary
- b)Tenzing Norgay
- c)Reinhold Messner
- d)George Mallory
Correct answer is option 'A'. Can you explain this answer?
The first person to reach the summit of Mount Everest was:
a)
Sir Edmund Hillary
b)
Tenzing Norgay
c)
Reinhold Messner
d)
George Mallory
|
|
Paradigm Institute answered |
Sir Edmund Hillary, a New Zealand mountaineer, and Tenzing Norgay, a Sherpa mountaineer from Nepal, were the first individuals to reach the summit of Mount Everest on May 29, 1953. They successfully climbed the world's highest peak as part of the British expedition led by John Hunt.
Chapter doubts & questions for Inventions - Lucent for GK 2025 is part of UPSC CSE exam preparation. The chapters have been prepared according to the UPSC CSE exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for UPSC CSE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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