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196. Why do we have eyebrows?

Their main function is hypothesized to prevent sweat, water, and other debris from falling down into the eye socket, but they are also important to human communication and facial expression. It is not uncommon for people to modify their eyebrows by means of hair addition, removal and makeup.
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197. What is the shortest sentence that has all 26 letters in the English alphabet?

Pack my box with five dozen liquor jugs.
This has thirty-two letters and repeats the letters i, e and o.
Brick quiz whangs jumpy veldt fox. 
The quick brown fox jumps over the lazy dog.
It contains three e's, two h's, four o's two r's, two t's, and two u's.
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198. What is longest railway platform of the world?

The longest railway platforms are: Gorakhpur railway station, Uttar Pradesh, India:1,366.33 m (4,483 ft) (longest in the world) Kollam Junction, Kerala, India:1,180.5 m (3,873 ft) Kharagpur, West Bengal, India: 1,072.5 m (3,519 ft).
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199. Why Use Salt When Hard Boiling Eggs?

The most common reason to add salt to water when hard boiling an egg is to the increase the temperature of the water for better cooking. Evidence also suggests that salted waterprevents an egg from cracking.
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200. Do Bananas have radiation?

Bananas are slightly radioactive because they contain potassium and potassium decays. Potassium is a necessary substance for healthy operation of your body. You would have to eat a LOT of bananas just to compete with the natural potassium dose of your body.
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201. Why does hot oil splatter on pouring water ?

Oil heats up faster than water because it has a lower specific heat capacity. As it reaches past boiling point of water as the water is denser than oil so its at the bottom. Then it turns into steam and the steam expands splashing the oil everywhere.
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202. What is the stuff on the side of a match box called?

The striking surface of a box or book of matches is typically composed of about 50% red phosphorous, to add heat and chemical reaction to the friction, and 25% powdered glass.
About 16% is binder, to keep the rough surface attached to the cardboard box, and the remainder is composed of a neutralizing agent and carbon black.
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203. What is Bandwagon Effect ?

The bandwagon effect is a psychological phenomenon in which people do something primarily because other people are doing it, regardless of their own beliefs, which they may ignore or override. The bandwagon effect has wide implications, but is commonly seen in politics and consumer behavior.
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204. What Is Braille?

Braille is a system of raised dots that can be read with the fingers by people who are blind or who have low vision. Teachers, parents, and others who are not visually impaired ordinarily read braille with their eyes. Braille is not a language.
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Curiosity Tea G.K.

http://telegra.ph/Curiosity-Tea-GK-04-06-2
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205. Who invented E-Mail?

V.A. Shiva Ayyadurai.
In 1978, a 14-year-old named V.A. Shiva Ayyadurai developed a computer program, which replicated the features of the interoffice, inter-organizational paper mail system. He named his program “EMAIL”. Shiva filed an application for copyright in his program and in 1982 the United States Copyright Office issued a Certificate of Registration, No. TXu-111-775, to him on the program. 

In the summer of 1978, Shiva had been recruited for programming assignments at the University of Medicine and Dentistry of New Jersey (UMDNJ) in Newark, New Jersey. One of his supervisors, Dr. Leslie P. Michelson, recognized his abilities and challenged him to translate the conventional paper-based interoffice and inter-organizational communication system (i.e., paper-based mail and memoranda) to an electronic communication system. 
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206. Where Desert meets the Sea?

The Southern Namib desert is home to some of the tallest and most spectacular dunes of the world, ranging in color from pink to vivid orange. These dunes continue right to the edge of the Atlantic Ocean. The cold waters of the sea brushing against the dunes of the Namib desert is one of the most surreal sights.
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207. Why value of 'g' is zero at center of Earth ?

From the Newtonian view, we know that gravity is a force exerted by everything that has mass. Therefore, all the gravitational forces cancel out each other. Therefore, the gravitational acceleration at the ideal center of the Earth is 0.
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208. what is the reason for using Aluminium Foil for packaging of Food ?

It is a good conductor but a very poor radiator and absorber (the two go together) - because it is shiny. The inner surface, where not actually in contact, will not absorb radiated heat well and the outer surface will not radiate heat well. Hence the food will not lose much heat. It is also cheap to produce in suitable sheet form.
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209. What happens during fruit ripening ?

The action of the enzymes cause the ripening responses. Chlorophyll is broken down and sometimes new pigments are made so that the fruit skin changes color from green to red, yellow, or blue. Acids are broken down so that the fruit changes from sour to neutral. The degradation of starch by amylase produces sugar.
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210. How many months before you can tell the sex of the baby?

This is one of the most common questions I receive from parents-to-be. Most patients undergo an ultrasound at around 18-20 weeks (about four and a half to five months). Normally, at this stage of pregnancy we can determine the baby's sex, but not always.
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211. Where does the name Nokia come from ?

According to Wikipedia, The company's name came from the Nokia town situated on the banks of the Nokianvirta River.
The company started as a wood-pulp mill, and expanded into producing rubber products in the Finnish city of Nokia. The company later adopted the city's name.
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212. How much time, new born baby takes to produce first tear?

Your new baby cannot cry. Your baby can scream and holler for what he/she wants or needs, but your baby cannot technically cry. Tears can't actually be created or released until about three weeks. However, sometimes it can take up to 4 or 5 months for a baby to produce their first tears – and remember, whether 3 weeks or 5 months, this is all normal.
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213. How does Lie Detector works?

If you're like most people, lying makes your heart race. It makes you pant. It drives up your blood pressure and makes you drip sweat. A polygraph machine detects lies by looking for signs of these physiological changes.
There has been a lot of controversy about whether lie detectors work. Some experts claimed that a high proportion of persons who “failed” the polygraph subsequently confessed to crimes. On the other hand, the test generates a lot of false positives,
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214. Which animal has the best sense of smell?

An elephant's trunk is not only long, it is packed with five times more smell receptors than humans. And now research has found that the African elephants have the greatest sense of smell among mammals - even beating dogs including the bloodhound renowned for its sniffing ability.
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215. Why is the left lung smaller than the right lung?

The left lung is slightly smaller than the right lung because 2/3 of the heart is located on the left side of the body. The left lung contains the cardiac notch, an indentation in the lung that surrounds the apex of the heart. Each lung consists of several distinct lobes.
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Curiosity Tea G.K.

http://telegra.ph/Curiosity-Tea-GK-04-12
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Curiosity Tea G.K.

http://telegra.ph/Curiosity-Tea-GK-04-12-2
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216. What fish is the only one that can blink with both eyes?

A shark is the only fish that can blink with both eyes. Most fish do not have eyelids. Only a few, like the shark, have nictitating eyelids, which consist of a membrane that closes over the eye like an upside-down eyelid.
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217. which country located in two continents?

Istanbul is the city in the world located on two continents - Europe and Asia. 
One part of Istanbul lies in Europe and the other part lies in Asia. Istanbul's European part is separated from its Asian part by the Bosphorus strait, a 31-km-long waterway that connects the Black Sea with the Sea of Marmara, and forms a natural boundary between the two continents.
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Curiosity Tea G.K.

http://telegra.ph/Curiosity-Tea-GK-04-12-3
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218. Does everyone have a different tongue print?

Similar to fingerprints, everyone alsohas a unique tongue print. The heart may be the hardest working muscle in the human body, but the tongue, which is made up of groups of muscles, is pretty tough as well. Similar to fingerprints, everyone also has a unique tongue print.
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219. How cockroach can live without head ?

A cockroach can live for a week without its head. Due to their open circulatory system, and the fact that they breathe through little holes in each of their body segments, they are not dependent on the mouth or head to breathe. The roach only dies because without a mouth, it can't drink water and dies of thirst.
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220. which acid is found in scorpion?

Scorpion venom contains a very small protein chain called chlorotoxin, only 36 amino acids long. This tiny protein has a very powerful effect though. It is perfectly shaped to block chloride channels and stop chloride ions from entering muscle cells.
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221. what is tallest statue of world?

An artist's impression of the 'Statue of Unity' to honour Sardar Vallabhbhai Patel, India's first deputy prime minister, will stand at 597ft when completed in 42 months. It is almost 100ft taller than China's Spring Temple Buddha, the world's current tallest statue at 502ft.
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222. what is function of spleen in our body?

The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system. Old red blood cells are recycled in thespleen, and platelets and white blood cells are stored there. The spleen also helps fight certain kinds of bacteria that cause pneumonia and meningitis.
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223. What is the longest recorded flight of a chicken?

As of 2014, the longest recorded time a chicken has been observed flying continuously is 13 seconds. The furthest recorded flight of a chicken covered 301.5 feet.
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224. Dolphins Keep an Eye Out While Sleeping?

Dolphins Keep an Eye Out While Sleeping. Dolphins have a clever trick that doesn't involve jumping in the air for fish: They can overcome sleep deprivation and remain constantly vigilant for days at a time by resting one half of their brain while the other half remains conscious.
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225. Why Does Urine Glow Under a Black Light?

You can use a black light to detect body fluids. It's actually a good way to look for pet urine or make sure a bathroom or hotel room is really clean. Cat urine, in particular, glows very brightly under ultraviolet light. Urine glows under a black light primarily because it contains the element phosphorus.
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226. Longest English word with letters arranged in alphabetical order?

Aegilops, at eight letters long, is the longest word whose letters are arranged in alphabetical order. Seven letter words with this property include beefily and billowy. Six letter words include abhors, accent, access, almost, biopsy, bijoux, billow, chintz, effort, and ghosty.
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227. How Many Times Does Your Heart Beat in a Lifetime?

If you use an average of 80 beats per minute, your heart beats about 4,800 times per hour. That's a whopping115,200 times per day. Over the course of a year, your heart would beat about 42,048,000 times! If you live to be 80 years old, your heart would have beaten approximately 3,363,840,000 times!
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228. What is Thermobaric Weapons?

A thermobaric weapon is a type of explosive that utilizes oxygen from the surrounding air to generate an intense, high-temperature explosion, and in practice the blast wave typically produced by such a weapon is of a significantly longer duration than that produced by a conventional condensed explosive.
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229. What is MOAB, 'Mother of All Bombs' and what is it capable of ?

MOAB is thought to be 'the most fearsome explosive weapon' in the Pentagon's possession and can penetrate through 60 meters of enforced concrete.
The "Mother of All Bombs," officially known as the GBU-43/B Massive Ordnance Air Blast, is said to be the most powerful non-nuclear weapon in America's arsenal.
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230. How do rice weevils creep into a sealed, unopened plastic bag of rice?

Most likely, they were from the rice fields and made its way to your home starting off as eggs. A female rice weevil can lay up to 300 eggs during her lifetime, so its pretty easy to see how this can happen. They can be killed by extreme cold (freezing) or heat, so it is assumed that the rice manufacturer had less than state-of-the-art quality control practices, if the eggs are hatching inside your rice. However, it is also reasonable to assume 'a few' slip by the screening process every once in a while. Once hatched, they can multiply if its long enough for them to have matured into adulthood.
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231. Why do ants die in sugar and water?

Ants, like other land-based animals, derive their oxygen from air and will drown after a certain period when submerged in water. Some species such as the fire ant, however, have adaptations that allow them to form living rafts after evacuating their nests, drastically increasing their survivability during floods.
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232. Which one is more powerful, Train's engine or aeroplane's ?

Our electric train WAP-7's highest power is 6,350 hp. Whereas, Boeing 777-300ER's engine GE90 has 100,000lbs. It will be nearly 185,000hp, which is 30 times greater than our train's engine.
Now let us compare their weights.
Weight of Electric train engine WAP-7: 125 ton. While the Boeing engine GE90 weighs only 7.5 ton. Pristine jet aeroplane Boeing 707's engine Douglas DC-8's power was 20,000hp. However, the power of train's engine cannot be compared with that of the plane's, in any means.
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233. Do you know that Octopus actually have two legs and six arms? Not eight arms.

To most of us it has always seemed obvious that an octopus has eight arms. But experts have now revealed that this assumption is wrong - as two of their long tentacle-like limbs are in fact legs. A study by scientists at Sea Life centres across Europe found that the invertebrates move across the sea bed using their two rearmost limbs, leaving the other six free for the important business of feeding.

Researchers who observed the creatures in action found they push off with the "legs" and then employ the other tentacles to pump themselves along. Scientists from 20 centres across Europe analysed data from 2,000 observations of common octopuses to get the results.

"Observations showed that they use the rearmost two to get around over rocks and the seabed. They also use these two legs to push off when they wish to swim, and then other tentacles are used to propel them."
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234. What was the first mobile phone?

Motorola was the first company to produce a handheld mobile phone. OnApril 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.
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235. What is the most spoken language in the world?

You may have thought that the most spoken language in the world is English. However, that is not the case as the most spoken language in the world is Mandarin, followed by Spanish. English ranks third followed by Hindi and Arabic.
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236. What was the First News Paper in The World ?

Johann Carolus (1575−1634) was a German publisher of the first newspaper, called Relation aller Fürnemmen und gedenckwürdigen Historien (Account of all distinguished and commemorable news). The Relation is recognised by the World Association of Newspapers, as well as many authors as the world's first newspaper.
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236. What was the First News Paper in The World ?

Johann Carolus (1575−1634) was a German publisher of the first newspaper, called Relation aller Fürnemmen und gedenckwürdigen Historien (Account of all distinguished and commemorable news). The Relation is recognised by the World Association of Newspapers, as well as many authors as the world's first newspaper.
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237. How do Ethiopia have 13 month a year?

Ethiopia don't use the Julian calander, rather ethiopian's have their own calander system that have 12 month with 30 days(all are same) and one month so-called pagume which 5 days and 6 days on a leap year( once 4 year).
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238. Why are some chicken eggs white in color and some brown?

You might assume that white eggs are laid by white-feathered chickens and brown eggs by brown-feathered ones, and you would be somewhat correct with that assumption. The color of the chicken does play a role, but it is the color of the earlobe that determines the shell color. White or light-colored lobes indicate white eggs and chickens with red lobes produce brown eggs. However, in terms of nutritional value, both eggs are the same.
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239. Which is the human organ with most bones?

The human feet contains 52 bones which is 1/4 of the entire 206 human body bones. This could be explained as result of the mechanical complexity of the feet which enable it perform diverse function.
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240. How do I prevent the yellowing of pages of a book?

This is always a problem if, like me, you have loads of books lying around. Once the pages of a book start to yellow, there's no going back. To prevent pages from becoming discoloured and brittle, here's a few things you can do.
Avoid Sunlight:
Sunlight is one of the biggest causes of book damage. The UV rays in sunlight can fade book covers and turn pages yellow over time, often in less time than you may think. This is why the page edges will often appear darker than inside. 
Check Indoor Lighting:
Fluorescent lighting is as damaging to paper as sunlight. If you are unable to replace the lighting in the room where your books are stored, you will need to use filtering materials to shield the light. These materials can also be used on windows to shield the sun's UV rays.
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241. What is a Dream Catcher?

http://telegra.ph/What-is-a-Dream-Catcher-04-22
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242. What was the first operating system in mobile phones?

2000 – Symbian becomes the first modern mobile OS on a smartphone with the launch of the Ericsson R380. 2001 – The Kyocera 6035 is the first smartphone with Palm OS. Microsoft's first Windows CE (Pocket PC) smartphones are introduced.
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243. How many religions in the world ?

According to some estimates, there are roughly 4,200 religions in the world. The word religion is sometimes used interchangeably with "faith" or "belief system", but religion differs from private belief in that it has a public aspect.
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244. Can you win a chess game without moving?

Yes, you can. There are several scenarios in which you can win a chess match without making a single move (mind you, the scenarios are somewhat theoretical):

1.You play black. You start the clock and your opponent does not make a move within the time control. You win.

2.You play black in a blitz game. You start the clock and your opponent makes an illegal move and presses their clock. You can claim a win by pointing out the illegal move.

3.You play black. You start the clock and your opponent makes an illegal move and presses their clock. You point out the illegal move and your opponent needs to make another move. If the opponent makes another illegal move, you can claim a win.

4.You play either black or white and your opponent does not show up. You win by forfeit.
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244. What is left side driving and right side driving?

Most countries which were British colonies still drive on the left handside of the road including huge land masses such as India, Australia and Southern Africa as well as the Caribbean. Europe generally drives on the right hand side apart from the United Kingdom, Ireland, Malta and Cyprus.
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245. What is KYC ?

Know your customer (KYC) policy is an important step developed globally to prevent identity theft, financial fraud, money laundering and terrorist financing. The objective of KYC is to enable banks to know and understand their customers better and help them manage their risks prudently.
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246. How many IP address does Google have ?

It turn out (using this script), Google is controlling 200K++ public IP address on the Internet:-

$ total=0
for slash in $(dig TXT +short _netblocks{,2,3}.google.com | tr ' ' '\n' | grep '^ip4:' | cut -d '/' -f 2); do
total=$((total+$(echo "2^(32-$slash)" | bc -l)))
done
echo $total

What does it give us? 239,616
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247. What is the last sense that a person loses?

When a person dies, hearing is generally the last sense to go. The first sense lost is usually sight. Then follows taste, smell, and touch.
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http://telegra.ph/Seven-Wonders-of-World-04-25
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248. Why Do We Blink?

Every time you blink, your eyelids spread a cocktail of oils and mucous secretions across the surface of the eye to keep your globes from drying out. Blinking also keeps eyes safe from potentially damaging stimuli, such as bright lights and foreign bodies like dust.
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249. Why are the flowers that bloom at night generally white?

Most of the night flowers are generally white because white emerges better in low light conditions making it simpler for insects to discover. As they bloom at night the plant does not have to waste resources producing coloured pigments (for petals) to attract day insects (such as bees) - most night blooming flowers are pollinated by moths and bats.Night blossoming blooms are ordinarily vigorously scented - which goes about as an attractant for nighttime insects and mammal's.
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250. Why is Venus so bright in the night sky?

Venus is so bright because its thick clouds reflect most of the sunlight that reaches it (about 70%) back into space, and because it is the closestplanet to Earth. Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon).
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251. How does freezing rain form?

Freezing rain is the name given to rain that falls when surface temperatures are below freezing. Unlike sleet, a mixture of rain and snow, ice pellets, or hail, freezing rain is made entirely of liquid droplets.
If the temperature is above freezing below the cloud bottom to the ground, the frozen particles melt into liquid droplets that reach the surface and this is called rain. Ice storms occur when precipitation particles melt and then fall through a layer of subfreezing air near the ground.
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252. How does BitTorrent work?

Seed is a person who has a torrent file open in their client (let's say the same file you are trying to download) and the only difference between you and them is that they have the complete file downloaded already and are now "seeding" - sharing the file with peers but not downloading any parts of the file from others.
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253. Which animal has the largest brain in the world?

The average adult human brain weighs about 3 pounds – the same weight as the average brain of a dolphin (which is also a very intelligent animal). But there are animals with larger brains that are not considered to be as intelligent as a dolphin. For instance, a sperm whale has a brain that weighs about 17 pounds.
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254. What oath does a doctor take?

Hippocratic Oath: Modern Version. I swear to fulfill, to the best of my ability and judgment, this covenant: I will respect the hard-won scientific gains of those physicians in whose steps I walk, and gladly share such knowledge as is mine with those who are to follow.
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255. How do a person got 206 bones from 300?

The human skeleton is the internal framework of the body. It is composed of around 300 bones at birth – this total decreases to 206 bones by adulthood after some bones have fused together. The bone mass in the skeleton reaches maximum density around age 20.
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256. How many time zones are there in Alaska?

Alaska's four time zones have become two. More than 98 percent of the state's population is in one of these zones, now called Yukon time, which is one hour earlier than Pacific standard time and four hours earlier than Eastern standard time.
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257. How Evaporative Cooler Works ?

In an evaporative cooler, such as Breezair, a pump circulates water from the reservoir on to a cooling pad, which in turn becomes very wet. A fan draws air from outside the unit through the moistened pad. As it passes through the pad the air is cooled by evaporation.
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http://telegra.ph/Timeline-Of-Computer-Viruses-04-25
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258. Who is Youngest person to climb Mount Everest ?

Jordan Romero from United States is the first to climb on mount everest. He is 13 yr 10 month 10 day old when he climb. Jordan climb on 22may 2010. The previous record for youngest to climb Everest was held by Ming Kipaof (Nepal) who was 15 years old when she reached the summit in 2009.
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259. How far can you drill into the Earth's crust?

Do you think you can dig a tunnel from New Delhi to New York. Well, no one has thus far been able to drill a hole deep enough to penetrate the Earth's crust. In 1960s US scientists attempted to drill into mantle but the effort was unsuccessful. Deepest hole ever drilled is in northern Russia on Kola Peninsula in which they managed to reach more than 12 km into crust after 19 years of drilling.
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260. Can Birds See Earth's Magnetic Field?

To find north, humans look to a compass. But birds may just need to open their eyes, a new study says. Scientists already suspected birds' eyes contain molecules that are thought to sense Earth's magnetic field. In a new study, German researchers found that these molecules are linked to an area of the brain known to process visual information.
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261. Why does rain come in drops and not in continuous stream?
A cloud is made of small drops of water or ice crystals and to form rain, water vapour needs "Condensation Nucleus" which can be tiny particles of dust or pollen. Condensing droplets that form the cloud get large and heavy enough to overcome the upward pressure of convection, they begin to fall. Size of the drop rarely exceeds about 5mm. Larger drops do not survive as the process of surface tension which holds the drop together is exceeded by frictional drag of air. Therefore larger drops break into smaller drops. Thus drops keep on falling side by side and not in a continuous stream.
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262. Which Continent Lies in All Four Hemispheres?

The world is divided into four hemispheres based on lines of latitude and longitude. The equator is an imaginary line that is equidistant from the North and South Poles. This line falls at zero degrees latitude. The part of the Earth that is north of the equator is known as the Northern Hemisphere. The part of the Earth that is south of the equator is known as the Southern Hemisphere. The Western and Eastern Hemisphere are divided by zero degrees longitude which is known as the Prime Meridian. The Western Hemisphere occupies the geographic space west of the prime meridian and east of the antemeridian which lies at 180 degrees longitude. The Eastern Hemisphere is found east of the Prime Meridian and west of the antemeridian.
The Only Continent That Can Be Found in All Four Hemispheres-
While several of the world’s continents are traversed by the separation between two hemispheres, there is only one continent in the world that lies in all four hemispheres: Africa. This geography fact also means that Africa is the only continent to have land both at the Equator and the Prime Meridian. These two maps show how the continent of Africa lies in both the Northern and Southern Hemispheres and the Western and Eastern Hemispheres.
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263. Which animal has the strongest bite force?

Do you think that the largest animal in the world with a cavernous mouth has the most powerful bite force. Fortunately blue whales don't have teeth instead they have baleen plates to trap a shoal of krill (a tiny crustacean). Most powerful bite ever recorded from a living animal is from the salt water crocodile. They have a mind boggling crushing force of 16414N (Newton is the SI unit of force). Now who has the most powerful bite force among land animals? Lions? Tigers? Leopards? No it is hyena, the master scavenger, who even dares to snatch food from a pride of lions. Hyenas have the most powerful jaw bones which can deliver a crushing force of 4689N. Sure, he is not the one to mess up with.
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264. Is Russia Bigger Than Pluto?

It Depends on How You Look at it.
When NASA’s New Horizon’s mission buzzed by Pluto in July 2015, the decades-long debate about the dwarf planet’s size was finally answered. In terms of diameter, Pluto was found to be 2370 kilometers (1473 miles) across, which would easily fit within Russia’s largest east-to-west width of 10,000 km. It would also fit within the largest north-to-south size of 4000 km. Using previous estimates, Russia edged out Pluto, at 17,075,200 square kilometers, while Pluto was thought to be 16,647,940 square kilometers. After the New Horizons mission, Pluto was found to be slightly larger than estimated, making its surface area 17,646,012 square kilometers, which is larger than Russia. Pluto was discovered in 1930 and was originally classified as the 9th planet in the solar system. The claim stating that Russia has a slightly larger surface area than Pluto was thought to be true until New Horizons passed by the dwarf planet in 2015. Pluto is slightly larger than Russia in terms of surface area.
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265. How do cats find their way home?

A feline's internal compass reacts to different magnetic fields on the earth's surface. Because they notice changes in the magnetic fields along their journey, cats are able to sense the direction that they came from, and follow that route home. In addition, just like humans who use the angle of the sun to map out their location, cats are able to find their exact position by using the angle of the sun as their guide.
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266. What is Lucifer effect?

The Lucifer effect describes the point in time when an ordinary, normal person first crosses the boundary between good and evil to engage in an evil action. It represents a transformation of human character that is significant in its consequences.
According to Christian legend, Lucifer was once God's favorite angel until he challenged God's authority and was cast into Hell with all the other fallen angels.
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267. Do you know the curious case of clownfish?

Don't you remember Nemo, famous animation character from Pixar Studios. But there is something mysterious about this cute looking fish that the movie didn't tell you. Do you know that clownfish can change it's gender? True, clownfish are all born males and when the only female member of group dies the dominant male changes his sex and become female. A school of clownfish has a strict social hierarchy. The leader of school is a dominant female clown fish who is much larger than the other members. Second position in the hierarchy goes to the largest and aggressive among the males. All other males are at the bottom of the hierarchial ladder. Only the dominant male mates with the female clownfish. If dominant female faces natural or unnatural death, then the dominant male will eats more and grows in size and gradually transforms into a female (clownfish are born with both ovarian and testicular tissues and hormones determine the sex). Then one of the remaining males will be chosen as her breeding partner and this cycle continues. So the movie was completely wrong from the perspective of science, isn't it?
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268. How the ear works?

The ear has three main parts: the outer ear (including the external auditory canal), the middle ear, and the inner ear. The outer ear (the part you can see) opens into the ear canal. The eardrum (tympanic membrane) separates the ear canal from the middle ear. The middle ear contains three small bones which help amplify and transfer sound to the inner ear. These three bones, or ossicles, are called the malleus, the incus, and the stapes (also referred to as the hammer, the anvil, and the stirrup respectively). The inner ear contains the cochlea which changes sound into neurological signals and the auditory (hearing) nerve, which takes sound to the brain. Any source of sound sends vibrations or sound waves into the air. These funnel through the ear opening, down the external ear canal, and strike your eardrum, causing it to vibrate. The vibrations are passed to the three small bones of the middle ear, which transmit them to the cochlea. The cochlea contains tubes filled with fluid. Inside one of the tubes, tiny hair cells pick up the vibrations and convert them into nerve impulses. These impulses are delivered to the brain via the hearing nerve. The brain interprets the impulses as sound (music, voice, a car horn, etc.).
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269. Which countries are largest arms exporters?

The US, Russia, and China are the world's largest arms exporters. They took the largest slices of a growing pie: The global arms trade was 16% larger in 2010-2014 than it was in 2005-2009, according to the Stockholm International Peace Research Institute(SIPRI).China in particular saw its share of global exports explode. It became the world's third-largest exporter accounting for 5% ofthe arms trade in 2010-2014. In comparison, China sold 3% of the world's arms in 2005-2009. But China still lags far behind the export power houses of the US and Russia. Washington sold 31% of all global importsduring the 2010-2014 period, while Moscow made up 27% of the global trade. The countries have customers around the world.
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270. How cold is it on the moon?

Daytime on one side of the moon lasts about 13 and a half days, followed by 13 and a half nights of darkness. When sunlight hits the moon's surface, the temperature can reach 253 degrees F (123 C). The "dark side of the moon" can have temperatures dipping to minus 243 F (minus 153 C).
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271. Who is the largest exporter of beef in the world?

Brazil and India were the largest exporters in the world in 2016 Australia and the United States. (Beef exports in India include carabeef). Four (4) countries exported more than 1 million metric tons of beef in 2016: India, Brazil, Australia & the United States.
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272. Do you know the heaviest and lightest coin of all time?

Heaviest coin ever was Swedish ten daler which weighed over 20kg! You could buy two cows with it. The smallest coin of all times was the Nepalese jawa, that weighed only 0.014 gms. Can you believe that even this tiny coin was cut into even smaller pieces, for use as change? You would certainly have to have very good eyesight to give the exact change when using this currency!
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273. How does a dog see color?

Unlike humans who have three different color sensitive cone cells in their retina (red, green and blue) dogs have only two (yellow and blue). This does not mean that dogs can't see green or red objects! It only means that they can't distinguish green, yellow or red objects based on their color.
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274. How are pearls formed?

Pearls are produced by oysters, mussels and clams in response to irritation. When a piece of grit (gravel or sand) gets between the oyster's shell and it's skin (mantle), natural pearls are formed. This happens when tissues surround the grit to produce mother-of-pearl layers. Pearls are artificially produced by inserting particles into clam. The largest pearl ever found was from Philippines in 1936. It weighted 6.86kg. It is now known as the Pearl of Lao-tze
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275. Why was the earthquake in China in 1556 considered the greatest natural disaster in history?

Do you know what an earthquake feels like? The ground rumbles and trembles, hanging lamps begin to sway back and forth, shelves begin to rattle or spill their contents, and the floor and walls shake! But the earthquake in 1556 in the Shensi Province of China, which killed about 8,00,000 people, was one of the greatest natural disasters in history. The earthquake happened at night. Thousands of people died, and fires raged through the ruins. Many people in Shensi lived in caves that were hollowed out of the soft cliffs. The cliffs caved in, burying them, while landslides and floods carried away thousands of others. The destruction spanned an area of 800 kms, and in some provinces, the average death toll was 60 percent of the population.
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276. How Lightning affects Electronics devices ?

Lightning can strike the air conductors directly and surge voltages, even from kilometres away, can enter into your installation. This surge voltage is then passed to ground through your equipment which can lead to damage or complete destruction of your equipment.
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277. What is the world's smallest ocean?

The Arctic Ocean is the smallest of the world's five ocean basins. With an area of about 5.4 million square miles, the Arctic Ocean is about 1.5 times as big as the United States. It is bordered by Greenland, Canada, Norway, Alaska, and Russia. The average depth of the Arctic Ocean is 12,000 feet and it is 17,850 feet at its deepest point.
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Curiosity Tea G.K.

http://telegra.ph/Inventions-and-Investors-05-06
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278. How Do Mobile Phones work ?

When you call someone using mobile phone, it converts your voice into an electrical signal, which is then transmitted as  radio waves and converted back into sound by receiver's mobile. 

Now, in order to remain portable, mobile phones need to have relatively compact antennas and use a small amount of power. This means that mobile phones can send a signal over only a very short range.
However it is cellular network which enables you to spread these signals by dividing up land into hexagonal areas. These areas pick up the weak signal from your phone and relay it onwards to another hexagon. And if you’re on the move while you talk, your phone switches hexagon as you go without interrupting your call.
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279. In which part of the world most violent weather happens?

According to NASA, the U.S. has the world's most violent weather. In a typical year, the U.S. can expect some 10,000 violent thunderstorms, 5,000 floods, 1,000 tornadoes and several hurricanes.
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http://telegra.ph/What-does-a-pilot-actually-do-during-take-offs-and-landings-05-06
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281. Why are fruit flies important to scientists?

If you have been seeing small flies or gnats in your kitchen, they are probably fruit flies. Fruit flies can be a problem because they are attracted to ripened or fermenting fruits and vegetables. Scientists use fruit flies for research. In fact, major discoveries in genetics -that genes are aligned on chromosomes and that chromosomes determine gender- have come from fruit fly.
To scientists, fruit flies are ideal subjects because they have a short life cycle and breed rapidly. Since they reproduce quickly, many generations can be studied in short time.
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282. Why does a bee die when it stings?

If you have ever been bitten by a bee, you know how painful it is. Did you feel very sorry for yourself? Well, you should actually feel sorry for the bee, because as soon as it stung you, it died! A bee attacks by driving its stinger deep into the enemy's flesh. But once the stinger is in, the bee cannot pull it out. In trying to do so, the stinger is torn from its body, leaving the poor bee dying. So in effect, the bee gives its life to attack the enemy. When humans do that, we call them heroes!
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283. Is chocolate bad for dogs?

Chocolate is poisonous to dogs; however, the hazard of chocolate to your dog depends on the type of chocolate, the amount consumed and your dog's size. In large enough amounts, chocolate and cocoa products can kill your dog.

- The toxic component of chocolate is theobromine. Humans easily metabolize theobromine, but dogs process it much more slowly, allowing it to build up to toxic levels in their system.
- A large dog can consume more chocolate than a small dog before suffering ill effects.
- A small amount of chocolate will probably only give your dog an upset stomach with vomiting or diarrhea.
- With large amounts, theobromine can produce muscle tremors, seizures, an irregular heartbeat, internal bleeding or a heart attack. The onset of theobromine poisoning is usually marked by severe hyperactivity.

The usual treatment for theobromine poisoning is to induce vomiting within two hours of ingestion. If you are worried or suspect that your dog may have eaten a large quantity of chocolate and they are showing any of the signs listed above, call your veterinarian immediately.
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284. Petrol, Diesel: Why You Should Refuel in the Morning ?

Experts say petroleum products expand when they are warm, so due to the expansion you end up with a lesser percentage of fuel for the money you've paid, if you're filling up in the afternoon or during the day.
In the mornings, however, when the temperature is cooler, fuel is denser, irrespective of whether it's in liquid form or gas, say experts.
"Fuel's dense when cold so when you fill up in the mornings, the fuel has been cool for 8-9 hours. Even in case of CNG (compressed natural.
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285. What is Bermuda triangle ?

The Bermuda Triangle, also known as the Devil's Triangle, is a loosely-defined region in the western part of the North Atlantic Ocean, where a number of aircraft and ships are said to have disappeared under mysterious circumstances. 
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286. Do you know that cats cannot drink milk?

What could be wrong with offering your cat a saucer of milk or a piece of cheese? Most cats are lactose-intolerant. Their digestive system cannot process dairy foods, and the result can be digestive upset with diarrhea.