Inventions & Discoveries MCQs - General Knowledge Questions and Answers | Page-5

41 Leprosy bacillus was invented by
A Hansen
B Fleming
C Koch
D Harvey

Answer: Option [C]
42 Electron microscope was discovered by
A Knoll and Ruska
B Janseen and Janseen
C Garhn and Shortt
D Farmer and Moore

Answer: Option [A]
43 Who was the leader of the term that developed the ‘Web Browser’ known as Mosaic?
A Bob Kahn
B Marc Andreessen
C Tim Berners-Lee
D Paul Mockapetris

Answer: Option [B]
44 Who discovered Solar System?
A Galileo
B Copernicus
C John Hadley
D Newton

Answer: Option [B]
45 Meteorology is the science of:
A Earthquakes
B Metals
C Mateors
D Weather

Answer: Option [D]
46 Which scientist discovered the radioactive element Radium?
A Marie Curie
B Albert Einstein
C Isaac Newton
D Benjamin Franklin

Answer: Option [A]
47 An instrument used to measure the density of milk is
A Glactometer
B Lactometer
C Polari meter
D Calciometer

Answer: Option [B]
48 Radioactivity was discovered by
A Einstein
B Roentgen
C Henri Becquerel
D Rutherford

Answer: Option [C]
49 Gunpowder was invented by
A Dr. Gatting
B C.V. Raman
C Colt
D Roger Bacon

Answer: Option [D]
50 Who invented the video-tape?
A Charles Ginsberg
B P. T. Farnsworth
C Richard James
D Georges de Mestral

Answer: Option [A]

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