Science & Tech –10

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271Q. Why should we learn English? English is an imperialistic language. All the languages of the world ended from development after explaining beauty. English is the only language that entered science and technology. It is an ever green language. It … Read More

Science & Tech –9

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246Q. What is the planet with the lowest escape velocity is? The planet with the lowest mass. In our Solar System, that will be Mercury with an Ve of of 4.25 km/s   247Q. Why do the biggest planets have … Read More

Science &Tech – 8

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221Q. What do you mean by electricity? Electricity is the flow of electrons through a conductor.   222Q. Why fuse is blown out if phase and neutral are joined? If phase and neutral are joined the resistance becomes zero. V=ir … Read More

Science & Tech. – 7

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196Q. Why dogs always keep tongue out? Through tongue the water gets evaporated and the body temperature is maintained. Why because dogs do not have seat pores or no sweating.   197Q. Why appendix is not developed in human beings? … Read More

Science & Tech. –6

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171Q. What is China clay? This white clay was first utilised by the Chinese to make earthen ware. That is why it is called China clay. It contains 46%     Silica 40%     Alumina Al2O3 14%     water.   172Q. What is … Read More

Science & Technology – 5

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Why molten wax which is transparent becomes opaque at normal temperature? Wax is a substance containing mainly esters of higher fatty acids and long chain monohydric alcohols.  They are solid and crystalline at room temperature. They melt at above 40oC … Read More

Science & Technology – 4

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The track or road are banked at bends.. Why ? At bending points, the outer side of the track is higher than the lower side. Necessary centripetal force is created to maintain the train on the track. Otherwise in the … Read More

Science & Technology –3

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Why do all metals turn red when heated? Red is the colour that indicates the temperature of the hot metal. Red is the first colour when a metal is heated, is seen.   Can animals distinguish colours? No.   Why … Read More

Science & Technology — 2

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What is blue moon? If there come two “full moon ” s  in a month the first one is called fullmoon day and the other is called “blue Moon”.   Which isotope isotope can trace out the source of water? … Read More

Science & Technology — 1

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How is it possible to transmit a number of channels through the same cable? Transmitting a number of channels through the same cable is possible because of frequency division multiplexing. Any signal can be broken down into sine wave components … Read More