Aeroplane was invented in the year
Answer: D
It was 1903.
Wilbur and Orville Wright flew at Kitty Hawk on 17 December 1903, covering 37 m in twelve seconds on the first of four flights that day. Their achievement was controlled flight, through wing-warping for roll.
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Rayon was invented by
Answer: A
Sir Joseph Swan invented rayon.
He made nitrocellulose fibres in 1883 while looking for a filament for his electric lamp, and found they could be woven. His wife crocheted the first artificial-fibre articles from them.
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When were bar code scanners invented?
Answer: C
They were invented in the 1970s.
The bar code itself was patented in 1952, but no scanner could read it cheaply until the laser arrived. The first commercial scan was made at a supermarket in Troy, Ohio, in June 1974 - a packet of chewing gum.
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The first practical direct-current electric motor was invented by
Answer: B
Frank Julian Sprague built it.
His constant-speed DC motor of 1886 held its speed under varying load, which earlier motors could not, and made electric traction practical. He equipped the Richmond streetcar system in 1888, the first successful electric tramway.
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Who invented Bakelite?
Answer: B
Leo Hendrik Baekeland invented Bakelite.
The Belgian-American chemist made it in 1907 from phenol and formaldehyde - the first wholly synthetic plastic, owing nothing to any natural material. It was hard, heat-resistant and an electrical insulator, and it made the early electrical industry possible.
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Who invented the first successful vulcanisation process for rubber ?
Answer: C
Correct answer: Charles Goodyear
Charles Goodyear discovered in 1839 that heating rubber with sulphur made it stable across a wide range of temperatures. The tyre company bearing his name was founded decades after his death and had no connection with him.
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In which year was Facebook founded?
Answer: A
It was founded in 2004.
Mark Zuckerberg launched thefacebook.com from his Harvard dormitory in February 2004. It opened to other universities within months and to anyone over thirteen in 2006.
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First pressure sensitive adhesive tape was invented in 1845 by
Answer: B
It was Dr Horace Day.
The American surgeon made a surgical tape in 1845 by spreading a rubber adhesive on strips of fabric - the first pressure-sensitive adhesive tape. Richard Drew's masking tape of 1925 and Scotch tape of 1930 followed the same idea.
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The most important feature of the Indian Parliament is that:
Answer: B
The most important feature is that it also comprises the President.
Article 79 states that the Parliament of India consists of the President and the two Houses. The President is not a member of either House but is part of Parliament: no Bill becomes law without assent, and Parliament cannot be summoned or prorogued except by the President.
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Vulcanized rubber was invented by
Answer: B
Charles Goodyear invented it.
He found in 1839, by dropping a mixture of rubber and sulphur on a hot stove, that the result stayed elastic in heat and cold alike. He spent his life in debt over it and died owing $200,000.
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