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2) Who claimed that a quantity divided by zero is infinite? (3) Who popularised "zero" in the Arab world and how? (4) What was the name of "zero" in the Arab world? (5) When did zero reach the Arab world? 10 10 SC IENCE TEASERS 34 (6) Which book popularised "zero" in Europe? (7) When did zero reach Europe? 53. Language—for applications? Yes, in computers, a specific language is for a specific application. Given below are a few languages and some applications. Match the two. (a) Learning various subjects through (1) ADA question-answer sessions.

1) Phosphorus (a) Marine birds (2) Nitrogen (b) Ice-caps (3) Water (c) Dead organic matter (4) Carbon (d) Fossil fuels (5) Sulphur (e) Lightning 70. The brain behind the "brain" A computer is often referred to as a brain. In the history of 10 10 SC IENCE TEASERS 44 computer, several such "mechanical" brains of different types have been produced. In the following columns, those different mechanical brains and their brainy inventors are mentioned. Match the two. P. W Leibniz (5) UNIVAC (e) Jack Kilby (6) Pocket Calculator (0 Charles Babbage (7) Mark-I (g) Howard H.

8. Q. 9. Q. 10. SC IENCE TEASERS 16 Which country launched the first Space Shuttle—a reusable vehicle to enter the space frequently? (Japan/USA/USSR) Where did the major industrial accident in the world occur? (Paris/Bhopal/'California) Which country plans to land man on the surface of Mars? (USSR/France/India) What is the name of the spaceprobe that will be sent to study Jupiter and its moons? (Einstein/Jovian-I/Galileo) The Space Telescope has been named after a renowned astronomer. What is his name?

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