Chemistry Diploma Paper Essay Example for Free

Chemistry Diploma Paper Essay 1. Attempt any ten of the following : a) Why is an atom electrically neutral ? b) Differentiate between isotopes and isobars. c) Define conductor and nonconductor. d) State Faraday’s second law of electrolysis. e) Define cell. Give its classification. f) Explain the terms mineral and ore. g) Define alloys with suitable example. h) What is nickel silver ? Write its composition. i) Give composition of glass-wool. j) Name the types of plastics with examples of each. k) Define COD of sewage. l) Define Air-pollution. Give its magnitude. 2. Attempt any four of the following : 16 a) Give the comparison of electron, proton and neutron w.r.to their symbol, change, mass and location within an atom. b) Give four points of distinction between orbit and orbital. c) Write orbital electronic configuration of the following elements 24 39 20 N14 , Mg 12 , K 19 , Ne10 7 d) Describe the formation of NaCl molecule with diagram and name the type of bonding. e) Explain electrovalency and covalency with example. f) State and explain Faraday’s first law of electrolysis. P.T.O. 12002 *12002* MARKS 3. Attempt any four of the following : 16 a) Draw diagram and explain the construction working of lead-acid storage cell. b) A given quantity of electricity is passed through two cells containing copper sulphate and silver nitrate respectively. If 0.99 gms of silver and 0.29 gms of copper are deposited, find equivalent weight of silver when that of copper is 31.6. c) Explain the mechanism of electrolysis of fused sodium-chloride by using carbon electrodes. d) Why copper is electro-refined ? Describe the process of electro-refining of copper. e) Explain construction working and application of dry-cell. f) Define metallurgy. Outline the general principle of metallurgy. 4. Attempt any four of the following : 16 a) Define the terms : flux, slag, malleability and toughness. b) Write composition, properties and applications of Alnico and Woods metal. c) Explain with diagram the gravity separation used for concentration of iron-ore. d) Differentiate – calcination and roasting. e) Write any four purposes of making alloys. f) Explain the fusion method for manufacture of alloys. 5. Attempt any four of the following : 16 a) State four properties of plastics and write the uses based on each of given properties. b) What is thermocole ? Give its properties and applications. c) What is rubber ? What is the difference between natural and synthetic rubber ? d) What is green-house-effect ? State the measure to control it. e) Explain the causes of water pollution. f) What is bio-medical-waste ? Give two techniques for its disposal. 6. Attempt any four of the following : a) Write properties and application of glass-wool. b) Explain any four major sources causing air-pollution. c) Write any four methods to control water pollution. d) What is preventive environmental management ? Give one example. e) Distinguish between air-pollution due to vehicle and industries. f) Write short note on effect of E-waste. ————— 16

Comparing Huckleberry Finn and Tom Sawyer Essay -- comparison compare

Mark Twain's The Adventures of Huckleberry Finn follows a young boy named Huck through his adventures down the Mississippi River. Through the adventures and obstacles he faces and overcomes with Jim, a loyal run-away slave, Huck changes and becomes more mature. He is no longer the careless, prank playing boy that ran around and had fun at other people's expense. Near the end of his life-changing journey down the Mississippi, Huck is reunited with his idol and close friend Tom Sawyer and these once very similar boys now have many obvious differences. Huck differs from Tom in his way of thinking, in his treatment and attitude towards Jim, and in his tendency to question his surroundings. Huck sees and interprets the world realistically and in practical terms whereas Tom, a true romantic, believes the world operates like the stories in his books. A great example of their contrasting ways of thinking is in their differing approaches to rescue Jim from his imprisonment. Huck plans to simply steal the key, get Jim out, run to the canoe, and escape down the river on the raft. Huck's plan to get Jim out of captivity is straightforward, simple, and effective. Tom, however, complains that "its too blame simple," and that "there ain't nothing to it"(224). Tom's plan is complicated and full of unnecessary additions because of his stubborn adherence to the romantic scenarios that he reads in his novels. Tom believes there is "honor in getting [Jim] out through a lot of difficulties and dangers,"(230) and he goes out of his way to invent obstacles to make the situation more difficult and more like the stories he grew up on. He unnecessarily invents hard rock to dig t hrough, a tall tower to climb down from, an infested ... ...t the change that Huck undergoes. Without Tom, an unchanged character that Huck once modeled himself after, the reader cannot correctly judge how much Huck changed from his experiences down the river and how genuinely good Huck has become. After spending so much time with Jim and discovering Jim's real character and personality, Huck acquire new understanding, compassion, and respect for him. He can now see past the color of his skin and treat Jim as a human being. Although he will never consider Jim as an equal, he has already taken momentous steps towards realizing that the slave institution is unjust. Huck has gone beyond anybody in his society and has become free of the limitations that the southern society has placed on thought. He has become nearly the opposite of Tom, who is the perfect embodiment of the southern lifestyle and way of thinking. Â  

One of the major characteristics that Beowulf and Hamlet Essay

One of the major characteristics that Beowulf and Hamlet share is the fact that they both rid Denmark of a treacherous monster who poses a serious threat to the land. Beowulf uses his warrior-like skills to fight and conquer a physical monster who literally haunts the swamps outside the state and plagues it with murderous acts. Hamlet’s monster is also one who commits murderous acts, though this is in the form of his uncle Claudius who kills the King (Hamlet’s father) and usurps the Danish throne. The two men, Hamlet and Beowulf, are thrown into these battles as youth, and both take on the challenge willingly. In fact, Beowulf travels from Geatland specifically to meet the challenge of fighting Grendel. Hamlet too takes it upon himself to kill Claudius as soon as he finds out that this man has been the agent of his father’s death. Another characteristic that both Hamlet and Beowulf share is their death and the method in which this occurs. Both are defeated in their final efforts at ridding their homelands of the evil that had infiltrated. In fact, both die though their efforts are successful. Beowulf dies at the hand of the final monster (the dragon) whom he succeeds in slaying, but who also deals Beowulf a deathly blow that eventually kills him. Hamlet also has a similar experience in that, while he is able to slay Claudius by the end of the play, he is caught with a poisoned sword and eventually expires after all his enemies have died. The two characters die by peripheral (yet fatal) blows given them during the melee. Both show bravery by continuing to fight even while they are mortally wounded. Eventually, both succumb to the serious wounds they have acquired, yet they die in the victory of knowing they have defeated their enemies. Beowulf and Hamlet also differ in many ways, one of which is the character that they show throughout the play. While Beowulf displays a warrior-like character, Hamlet shows himself to be fearful and awkward in acting out the desires of his heart. Beowulf is eager to come to the aid of the King of Denmark, and he pauses only to partake of the feast given in his honor before he sets out to kill Grendel. When he encounters the monster, he loses no time in indecision but immediately performs the actions necessary to kill the beast. In fact, Beowulf fights three ferocious beasts throughout the story with the same vivacity and fierceness. Hamlet differs from Beowulf in his character, and he displays the tendency to employ a much more subdued and stealthy course of action. Though he too determines to defend the honor of Denmark’s (former) king by killing his murderer, he demonstrates a greater portion of dalliance and indecision than does Beowulf. When he gets his first chance to kill Claudius, his idle thoughts concerning the condition of Claudius’ heart (while praying) leads him to forfeit that chance and allow Claudius to live. He fails in his pursuits far more than Beowulf does too, because in his second attempt to kill Claudius, he ends up killing Polonius instead. In these ways, Hamlet shows himself to lack self confidence in a manner that is vastly different from Beowulf the ready warrior. Beowulf and Hamlet show differences in the tenure of their lives and the fulfilment of their royal destinies. Hamlet, unlike Beowulf, fails to ascend to the throne to which he is heir. He dies before the throne falls vacant and also fails to prove King Claudius a usurper in any effort to gain his rightful place on the throne. Beowulf, on the other hand, is able to spend fifty years as ruler of his Geat kingdom. In addition to this, Beowulf differs from Hamlet in his ability to live out his live and to attain old age. He is able to demonstrate his strength as a ruler for many years and to gain the respect of his subjects. Hamlet, who dies young, is unable to do any of this. He is never able to command the subjects over whom he was destined to rule precisely because of the fact that his life ends tragically in his youth. Therefore, while both men perform in the role of princes during their youth, Beowulf becomes promoted to the level of king while Hamlet dies with all his potential. Works Cited Beowulf. The Harvard Classics, Volume 49. Frances B. Grummere (Trans. ) 1910. P. F. Collier & Son, 1993. Shakespeare, William. Hamlet. London: Penguin, 1994.

Analysis Of The Article A Classic Format For Piano

The Five-Paragraph Essay # A classic format for compositions is the five-paragraph essay. It is not the only format for writing an essay, of course, but it is a useful model for you to keep in mind, especially as you begin to develop your composition skills. The following material is adapted from a handout prepared by Harry Livermore for his high school English classes at Cook High School in Adel, Georgia. It is used here with his permission. Introduction: Introductory Paragraph See, first, Writing Introductory Paragraphs for different ways of getting your reader involved in your essay. The introductory paragraph should also include the thesis statement, a kind of mini-outline for the paper: it tells the reader what the essay is about.†¦show more content†¦Body — Second paragraph: The second paragraph of the body should contain the second strongest argument, second most significant example, second cleverest illustration, or an obvious follow up the first paragraph in the body. The first sentence of this paragraph should include the reverse hook which ties in with the transitional hook at the end of the first paragraph of the body. The topic for this paragraph should be in the first or second sentence. This topic should relate to the thesis statement in the introductory paragraph. The last sentence in this paragraph should include a transitional hook to tie into the third paragraph of the body. Body — Third paragraph: The third paragraph of the body should contain the weakest argument, weakest example, weakest illustration, or an obvious follow up to the second paragraph in the body. The first sentence of this paragraph should include the reverse hook which ties in with the transitional hook at the end of the second paragraph. The topic for this paragraph should be in the first or second sentence. This topic should relate to the thesis statement in the introductory paragraph. The last sentence in this paragraph should include a transitional concluding hook that signals the reader that this is the final major point being made in this paper. This hook also leads into the last, or concluding, paragraph. Conclusion: Concluding paragraph: #This paragraph should include the following: an allusion to the pattern used in the