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Which is the nearest of the sun?
  • a)
    Beta centaury
  • b)
    Alpha centaury
  • c)
    Gamma centaury
  • d)
    Proxima centaury
Correct answer is option 'D'. Can you explain this answer?
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Which is the nearest of the sun?a)Beta centauryb)Alpha centauryc)Gamma...
Proxima Centauri is the nearest star to the Sun. It is part of the Alpha Centauri star system, located about 4.24 light-years away from Earth in the constellation of Centaurus. Proxima Centauri is a red dwarf star, much smaller and cooler than the Sun, making it faint and challenging to observe with the naked eye. Despite its proximity, Proxima Centauri is still quite distant on astronomical scales, but it holds significance for astronomers studying exoplanets and potential habitability in its vicinity.
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Adapted fromCowboy Songs and Other Frontier Balladsby John A. Lomax(1910)The big ranches of the West are now being cut up into small farms. The nester has come, and come to stay. Gone is the buffaloandthe free grass of the open plain—even the stinging lizard, the horned frog, the centipede, the prairie dog, the rattlesnake, are fast disappearing. Save in some of the secluded valleys of southern New Mexico, the old-time round-up is no more; the trails to Kansas and to Montana have become grass-grown or lost in fields of waving grain; the maverick steer, the regal longhorn, has been supplanted by his unpoetic but more beefy and profitable Polled Angus, Durham, and Hereford cousins from across the seas. Thechanging and romantic West of the early days lives mainly in story and in song. The last figure to vanish is the cowboy, the animating spirit of the vanishing era. He sits his horse easily as he rides through a wide valley, enclosed by mountains, clad in the hazy purple of coming night,—with his face turned steadily down the long, long road, "the road that the sun goes down." Dauntless, reckless, without the unearthly purity of Sir Galahad though as gentle to a woman as King Arthur, he is truly a knight of the twentieth century. A vagrant puff of wind shakes a corner of the crimson handkerchief knotted loosely at his throat; the thud of his ponys feet mingling with the jingle of his spurs is borne back; and as the careless, gracious, lovable figure disappears over the divide, the breeze brings to the ears, faint and far yet cheery still, the refrain of a cowboy song.Q. Which of the following does NOT fit with the author’s description of the cowboy?

Directions:In the passages that follow, some words and phrases are underlined and numbered. In the answer column, you will find alternatives for the words and phrases that are underlined. If you think that the original version is best, choose “NO CHANGE,”. You will also find questions about a particular section of the passage, or about the entire passage. These questions will be identified either by an underlined portion or by a number in a box. Look for the answer that clearly expresses the idea, is consistent with the style and tone of the passage, and makes the correct use of standard written English. Read the passage through once before answering the questions. For some questions, you should read beyond the indicated portion before you answer.The following paragraphs may or may not be in the most logical order. Each paragraph is numbered in brackets, and One Question will ask you to choose where Paragraph should most logically be placed.PassageModern Dentistry[1]Only two or three generations ago, a painful toothache often resulted in an equally painful extraction, permanentlyleaving (1) an empty hole where an incisor or molar had once been. Aging often meant eventually losing each tooth, one by one, as decay or breakage took its toll. Many people ended up in the same position as when their lives (2) began, gumming their food instead of chewing it.[2] (3) It wasn’t until the early 1960s that dentistry began looking the way it does today, with its sterile tools, modern equipment, and new techniques.(4) Disposable needles that can be tossed in the trash, first introduced during World War II, and a better understanding of bacteria and the spread of diseases provided for a much more sterile environment than before. Tools that were not disposable were sterilized with the use of an autoclave, which became a required piece of equipment in any dentist’s office. (5) The autoclave, or sterilizer, first invented by Charles Chamberland in 1879, is a pressurized container that heats the water inside it above the boiling point, effectively sterilizing any steel instruments inside byusing the heat to kill the viruses and bacteria on the instruments. (6) Today, most dentists use as many disposable tools and materials as possible in an effort to squelch the spread of any viruses or bacteria. Most dental (7) workers will even wear facemasks over their mouths and use plastic gloves as they worked on a patient.[3] In many ways, today’s dentists have an easier task before them as the profession has evolved and materials and procedures have improved.(8) On the other hand the constant changes being made in the dental profession require a dentist to both learn about and incorporate the changes into his or her own practice. (9) Looking back at the last 50 years of this evolution demonstrates that making these changes (10) can be a daunting challenge.[4] High speed drills have replaced the foot pump operation of older drills, and more effective water coolers and suction tools have replaced the cruder prototypes used in the early 1900s. The cuspidor has gone mostly by the wayside, replaced by a suction device that the dentist’s assistant uses to remove rinse-water or tooth fragments from the patient’s mouth. X-ray equipment has also greatly improved over the past several (11) decades; X-raymachines are now much safer and easier to operate, as well as more compact in size. The dental chair has also undergone radical changes over the years, (12) because it would allow greater comfort for the patient and easier access for the dentist.[5] Dental procedures and techniques likewise improved dramatically during the second half of the twentieth (13) century after 1950. New anesthetic methods add to patient comfort, an essential component in any successful dental procedure. The physician can choose from a variety of numbing options, depending on the patient and the procedure being done. Preserving teeth, rather than simply extracting them when damaged, is the goal of most dentists today. (14) Dental amalgams, silicates, and gold and porcelain crowns have all become easier to work with and are much more durable.Q. (13)

Adapted from “The Fear of the Past” in What’s Wrong with the World by G.K. Chesterton (1910)The last few decades have marked by a special cultivation of the romance of the future. We seem to have made up our minds to misunderstand what has happened; and we turn, with a sort of relief, to stating what will happen—which is (apparently) more easy. The modern man no longer presents the memoirs of his great grandfather; but is engaged in writing a detailed and authoritative biography of his great-grandson. Instead of trembling before the specters of the dead, we shudder abject under the shadow of the babe unborn. This spirit is apparent everywhere, even to the creation of a form of futurist romance. Sir Walter Scott stands at the dawn of the nineteenth century for the novel of the past; Mr. H. G. Wells stands at the beginning of the twentieth century for the novel of the future. The old story, we know, was supposed to begin: "Late on a winters evening two horsemen might have been seen . . ." The new story has to begin: "Late on a winters evening two aviators will be seen . . ." The movement is not without its elements of charm; theres something spirited, if eccentric, in the sight of so many people fighting over again the fights that have not yet happened; of people still aglow with the memory of tomorrow morning. A man in advance of the age is a familiar phrase enough. An age in advance of the age is really rather odd.Which of the following is the best form of the underlined selection, "The movement is not without its elements of charm"?

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Which is the nearest of the sun?a)Beta centauryb)Alpha centauryc)Gamma centauryd)Proxima centauryCorrect answer is option 'D'. Can you explain this answer?
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