Who designed Suez Canal?
Answer: A
Ferdinand de Lesseps designed it.
The French diplomat obtained the concession and built the Suez Canal between 1859 and 1869, joining the Mediterranean to the Red Sea without locks. His later attempt on the Panama Canal ended in bankruptcy and scandal.
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When were the first rockets launched?
Answer: B
They were launched in the 13th century.
Chinese armies used gunpowder rockets as fire arrows against the Mongols at the siege of Kaifeng in 1232. The technology spread west with the Mongol conquests and reached Europe within a few decades.
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What Galileo invented?
Answer: D
Various authors have credited the invention of the thermometer to Cornelius Drebbel, Robert Fludd, Galileo Galilei or Santorio Santorio. The thermometer was not a single invention, however, but a development.
Galileo Galilei also discovered that objects (glass spheres filled with aqueous alcohol) of slightly different densities would rise and fall, which is nowadays the principle of the Galileo thermometer (shown). Today such thermometers are calibrated to a temperature scale.
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Name of first popular web browser is
Answer: D
It was Mosaic.
Released in 1993 by Marc Andreessen and Eric Bina at the University of Illinois, it displayed images alongside text in the same window and ran on ordinary personal computers. It was the browser that made the Web popular, and Netscape grew out of it.
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Who invented Bicycle?
Answer: D
Kirkpatrick Macmillan is credited with it.
The Scottish blacksmith is said to have added rear-driven treadles to a hobby-horse about 1839, making the first bicycle that could be ridden without the feet touching the ground. The claim rests on later testimony rather than a patent.
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In which decade did television become widely available around the world?
Answer: B
It became widely available in the 1950s.
Broadcasting had begun before the war but was suspended during it. Sets became affordable in the 1950s: the coronation of Elizabeth II in 1953 and the growth of American networks put television into most homes in the industrial countries within the decade.
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Who invented Bifocal Lens?
Answer: C
Benjamin Franklin invented the bifocal lens.
He had the lenses of his reading and distance glasses cut across and set together in a single frame, so that he could look down to read and up to see across the room. He described it in a letter of 1784.
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Which laboratory instrument for measuring the acidity or alkalinity of a liquid was invented by its designer in the 1930s?
Answer: D
It is the pH meter, invented by Arnold Beckman.
He built it in 1934 for a Californian citrus grower who needed to measure the acidity of lemon juice, using a vacuum-tube amplifier to read the tiny voltage from a glass electrode. It founded Beckman Instruments.
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What is Charles Babbage (1792-1871) remembered for?
Answer: A
He is remembered for computers.
Charles Babbage designed the Difference Engine and then the Analytical Engine, which had a store, a mill, punched-card input and conditional branching - the essentials of a computer, a century before one was built. Neither was completed in his lifetime.
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Who was the first person to patent the jet engine?
Answer: A
Frank Whittle patented it first.
He filed his turbojet patent in January 1930 at the age of twenty-three. The Air Ministry showed no interest, and he could not afford the fee to renew it in 1935, which is why Hans von Ohain in Germany was able to patent independently.
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