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A Learning Portal from Recruitment India
Which country has developed the world’s first ‘AI Prosecutor’?
India
Russia
China
USA
Answer with explanation
Answer: Option CExplanation
Chinese scientists have developed the world’s first machine that can charge people with crime using artificial intelligence.
As per the scientists, the AI “prosecutor” can charge people with over 97 percent accuracy and it works on a verbal description. The researchers also announced that it can also identify “dissent” against the state.
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Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear
1828
1831
1825
There is no sure date
Answer with explanation
Answer: Option DExplanation
No one knows for sure when the first chocolate bar appeared or even who made it, but an important event occurred in 1828. The Van Houten press was invented, which extracted cocoa butter from the bean – the same press that brought the Cadbury Brothers success with Cocoa Essence.
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Which one of the following was to be discovered first in the chromosphere of the sun
Helium
Xenon
Krypton
Neon
Answer with explanation
Answer: Option AExplanation
1.1 Historical Overview. The first noble gas to be discovered was helium (Lockyer, 1869). Spectroscopic investigations of the Sun’s chromosphere during a solar eclipse in India in 1868 revealed a previously unobserved line, close in wavelength to the D1 and D2 Fraunhofer lines of sodium.
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Who developed the small pox vaccination?
Alexander Fleming
Eduard Jenner
Albert Einstein
None of these
Answer with explanation
Answer: Option BExplanation
The basis for vaccination began in 1796 when an English doctor named Edward Jenner observed that milkmaids who had gotten cowpox did not show any symptoms of smallpox after variolation.
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Who was the inventor of the postage stamp?
Rowland Hill
Ibrahim El-Naiz
Heinrich Hertz
Quam Hollista
Answer with explanation
Answer: Option AExplanation
December 3, 1795: Rowland Hill, who invented the first adhesive postage stamp in 1840, was born.
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Who was the inventor of Video games?
Eli Whitney
Henry Moseley
Karl Benz
Ralph Baer
Answer with explanation
Answer: Option DExplanation
German-American game developer Ralph Baer shows the prototype of the first games console which was invented by him during a press conference on the Games Convention Online in Leipzig, Germany in 2009. Baer died on Saturday
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Who invented Chloroform
James Simpson
Alexander
William Colf
Finle
Answer with explanation
Answer: Option AExplanation
The discovery of the use of chloroform as an anæsthetic, made by Sir James Young Simpson in Edinburgh in 1847, was marked by a graduation ceremony at the University at which the honorary degree of LL.
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When was barb wire patented?
1840
1900
1895
1874
Answer with explanation
Answer: Option DExplanation
Joseph F. Glidden was born in New York on Jan. 18, 1812. He invented barbed wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won, Gidden became known as the “Father of Barbed Wire”.
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Who developed Ballistic Missile ?
J. Robert Oppenheimer
Samuel Cohen
Wernher Von Braun
Answer with explanation
Answer: Option CExplanation
A modern pioneer ballistic missile was the A-4, commonly known as the V-2 developed by Nazi Germany in the 1930s and 1940s under the direction of Wernher von Braun.
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Who was associated with the creation of Pentium Chip?
Sabeer Bhatia
C. Kumar Patel
Arun Netravalli
Vinod Dham
Answer with explanation
Answer: Option DExplanation
Vinod Dham is an inventor, entrepreneur and venture capitalist. He is popularly known as the Father of the Pentium chip, for his contribution to the development of highly successful Pentium Processors from Intel. He is a mentor, advisor and investor; and sits on the boards of many companies including promising startups funded through his India based fund – Indo US Venture Partners, where he is the founding Managing Director.
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Name the scientist who had discovered that some molecules have mirror images?
Louis Pasteur
Henry Moseley
Robert Hooke
Lord Kelvin
Answer with explanation
Answer: Option AExplanation
Louis Pasteur discovered that some molecules have mirror images and explained them as left-handed and right-handed versions of a chemical compound.
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who is the inventor of the web?
Ted Nelson
Mike Sendall
Bill Gates
Tim Berners-Lee
Answer with explanation
Answer: Option DExplanation
Sir Timothy John Berners-Lee (born 8 June 1955), also known as TimBL, is an English engineer and computer scientist, best known as the inventor of the World Wide Web.
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Who invented Electric Generator?
Sir Alexander Graham Bell
Michael Faraday
Alfred B. Nobel
Thomas Alva Edison
Answer with explanation
Answer: Option BExplanation
Michael Faraday’s generator. Faraday had created the first transformer in August 1831. A few months later he designed and made this simple piece of apparatus based on his ring, developing the first-ever electric generator.
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Who discovered the iridium layer and won Nobel Prize also?
Henry Moseley
Pierre Curie
Santiago Ramon
Luis Alvarez
Answer with explanation
Answer: Option DExplanation
Luis Alvarez discovered the iridium layer and also he had given a theory that dinosaurs were driven to extinction by the aftermath of a large meteorite impact on Earth. In 1968, he won Nobel Prize in Physics
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Who is known as the father of neuroscience?
Santaigo Ramony Cajal
Alessandro Volta
Salim Ali
None of the above
Answer with explanation
Answer: Option AExplanation
Santiago Ramony Cajal is known as the father of neuroscience and he won the Nobel Prize in 1906 for Physiology or Medicine for his neuron doctrine.
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What Benjamin Franklin invented?
Bifocal spectacles
Radio
Barometer
Barometer
Answer with explanation
Answer: Option AExplanation
Invented in 1760.
A list of Benjamin Franklin’s inventions reveals a man of many talents and interests. It was the scientist in Ben that brought out the inventor. His natural curiosity about things and the way they work made him try to find ways to make them work better.
Ben had poor vision and needed glasses to read. He got tired of constantly taking them off and putting them back on, so he decided to figure out a way to make his glasses let him see both near and far. He had two pairs of spectacles cut in half and put half of each lens in a single frame. Today, we call them bifocals.
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Who is the founder of oceanography?
Susumu Tonegawa
Alhazen
Karl Landsteiner
Matthew Maury
Answer with explanation
Answer: Option DExplanation
Matthew Maury was known as the father of Oceanography and in his own lifetime he was called as ‘Pathfinder of the Seas’.
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