scientist, discoveries & inventions MCQ section 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general awareness mcq - 4 EXERCISES
The following question based on scientist, discoveries & inventions topic of general awareness mcq
(a) Dr. Wallace H. Carothers
(b) Louis Pasteur
(c) John Corbutt
(d) J. Nicephore Niepce
The correct answers to the above question in:
Answer: (b)
Wallace Hume Carothers was an American chemist, inventor and the leader of organic chemistry at DuPont, credited with the invention of nylon. He was a group leader at the DuPont Experimental Station laboratory, near Wilmington, Delaware, where most polymer research was done.
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Read more scientist discoveries and inventions Based General Awareness Questions and Answers
Question : 1
Radioactivity was discovered by
a) Einstein
b) Rutherford
c) Roentgen
d) Henri Becquerel
Answer »Answer: (d)
Antoine Henri Becquerel, a French physicist, was the discoverer of radioactivity along with Marie Sklodowska-Curie and Pierre Curie, for which all three won the 1903 Nobel Prize in Physics. Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability.
Question : 2
Who invented optical fibre?
a) T.H. Maimah
b) Samuel Cohen
c) Percy L.Spencer
d) Narinder Kapany
Answer »Answer: (d)
An optical fibre (or optical fibre) is a flexible, transparent fibre made of glass (silica) or plastic, slightly thicker than a human hair. It functions as a waveguide, or “light pipe”, to transmit light between the two ends of the fibre.
The field of applied science and engineering concerned with the design and application of optical fibres is known as fibre optics. Optical fibres are widely used in fibre-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication.
Narinder Singh Kapany is an Indian born American physicist who invented optical fibre.
Question : 3
Which of the following statement is false?
a) None of these
b) Polystyrene was discovered in 1839 by Edward Simon
c) It is not biodegradable
d) It is used for making plastics and CD cases
Answer »Answer: (a)
Polystyrene is a synthetic aromatic polymer made from monomer styrene. It is non-biodegradable, i.e., it cannot be decomposed by bacteria or other living organisms.
It was discovered in 1839 by Eduard Simon. Polystyrene is one of the most widely used plastics used in protective packaging (CD and DVD cases), containers, lids, bottles, trays, disposable cutlery.
Question : 4
Stephen Hawking is a
a) Scientist
b) American politician
c) Pianist
d) Guitarist
Answer »Answer: (a)
Question : 5
Who invented aeroplane ?
a) Wright Brothers
b) Edison
c) Hoffman
d) Stevenson
Answer »Answer: (a)
The Wright brothers, Orville and Wilbur, were two American brothers, who are credited with inventing and building the world’s first successful airplane on December 17, 1903. From 1905 to 1907, the brothers developed their flying machine into the first practical fixed-wing aircraft.
Question : 6
Name the branch of Zoology that deals with the scientific study of animal behaviour.
a) Anatomy
b) Ecology
c) Ethology
d) Physiology
Answer »Answer: (c)
Ethology is the scientific and objective study of animal behavior, usually with a focus on behavior under natural conditions. The term was first popularized by American myrmecologist (the study of ants) William Morton Wheeler in 1902.
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