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Callisto

  • 2 years ago

Which of the following statements concerning the manufacture of town gas in Hong Kong is/are correct? (1)Town gas is produced from coal. (2)Town gas contains hydrogen as the major component. (3)Oxygen is added to enhance the flammability of town gas prior to its delievery to consumers. A:(1) only B:(2)only C:(1) and (3) only D:(2) and (3) only I know the answer. Is the statement (3) correct? Why or why not?

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  1. mathslover
    • 2 years ago
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    so according to you C is correct?

  2. Callisto
    • 2 years ago
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    No

  3. mathslover
    • 2 years ago
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    second one is correct also hydrogen is present in 50% composition in Coal gas ( town gas ) as per my info.

  4. Callisto
    • 2 years ago
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    Actually, I'm asking if statement (3) is correct.

  5. mathslover
    • 2 years ago
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    oh k

  6. mathslover
    • 2 years ago
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    wait

  7. mathslover
    • 2 years ago
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    i think 3 is not correct as i think it is burnt in the absence of oxygen

  8. Callisto
    • 2 years ago
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    I can't believe things can be burnt without oxygen..

  9. UnkleRhaukus
    • 2 years ago
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    (3) is nonsense

  10. UnkleRhaukus
    • 2 years ago
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    oxygen is added At consumption, along with a high temperate

  11. Callisto
    • 2 years ago
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    But concerning town gas?

  12. Callisto
    • 2 years ago
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    Actually, there are two questions for statement (3) (a) Is oxygen added to town gas prior to its delievery to consumers? (b) Is the purpose of adding oxygen to enhance the flammability of town gas?

  13. mathslover
    • 2 years ago
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    a) is correct

  14. UnkleRhaukus
    • 2 years ago
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    what is town gas ?

  15. mathslover
    • 2 years ago
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    coal gas @UnkleRhaukus

  16. UnkleRhaukus
    • 2 years ago
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    natural cola seam gas ?

  17. UnkleRhaukus
    • 2 years ago
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    i though so

  18. mathslover
    • 2 years ago
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    I got it

  19. Callisto
    • 2 years ago
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    Town gas, produced from naphtha and natural gas, is a clean, safe and reliable gaseous fuel. Source: http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx I didn't know it's natural cola seam gas or coal gas...

  20. UnkleRhaukus
    • 2 years ago
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    is not a clean industry at all

  21. mathslover
    • 2 years ago
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    @Callisto the answer is a) coal gas contains 5% of ethylene that is used to increase luminous flame

  22. UnkleRhaukus
    • 2 years ago
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    i ment coal not cola*

  23. Callisto
    • 2 years ago
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    A:(1) only ?

  24. Callisto
    • 2 years ago
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    Sorry!!! @UnkleRhaukus

  25. mathslover
    • 2 years ago
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    no

  26. UnkleRhaukus
    • 2 years ago
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    im still deciding between (1) and (2)

  27. mathslover
    • 2 years ago
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    wait

  28. mathslover
    • 2 years ago
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    1) is correct 2) is also correct since hydrogen is present in 50% composition in coal gas 3) not correct

  29. Callisto
    • 2 years ago
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    wow....

  30. mathslover
    • 2 years ago
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    sarcastic mood? ;D but that is not in options

  31. UnkleRhaukus
    • 2 years ago
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    im not sure if produced is the right wording in (1)

  32. Callisto
    • 2 years ago
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    I'm sure (1) is not correct.

  33. mathslover
    • 2 years ago
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    Coal gas (also town gas and illumination gas) is a flammable gaseous fuel made by the destructive distillation of coal containing a variety of calorific gases including hydrogen, carbon monoxide, methane and volatile hydrocarbons together with small quantities of non-calorific gases such as carbon dioxide and nitrogen. - wikipedia 1) is absolutely correct

  34. mathslover
    • 2 years ago
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    but how r u sure @Callisto ?

  35. Callisto
    • 2 years ago
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    produced from naphtha and natural gas <- both are from petroleum. Also, don't forget I have the answer already.

  36. mathslover
    • 2 years ago
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    hmn so finally 2) is correct if you r sure that 1) is not correct

  37. UnkleRhaukus
    • 2 years ago
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    how do fossil fule deposits work ,

  38. Callisto
    • 2 years ago
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    As I mentioned before, I'm asking if (3) is correct, not (1) or (2).

  39. mathslover
    • 2 years ago
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    It is wrong as per me..

  40. mathslover
    • 2 years ago
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    *my info.

  41. Callisto
    • 2 years ago
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    Explanations?

  42. mathslover
    • 2 years ago
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    Ethylene is used for flammability of town gas not oxygen Ethylene is present in 5% composition in coal gas..

  43. Callisto
    • 2 years ago
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    http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx Please refer to the site.

  44. Callisto
    • 2 years ago
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    I'm sorry that I hid some words in the question. Look like I have to make it clearer...

  45. mathslover
    • 2 years ago
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    that matters a lot callisto : hong kong

  46. Callisto
    • 2 years ago
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    Question edited. Note that even though I'm a student here, I don't know the information related.

  47. Callisto
    • 2 years ago
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    It's not mentioned in the book nor there is any hint in the question.

  48. UnkleRhaukus
    • 2 years ago
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    Wobbe Index 24.

  49. mathslover
    • 2 years ago
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    Actually I am not sure that I can help you in this since I don't know about the condition in Hong Kong

  50. Callisto
    • 2 years ago
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    I just said that even student here don't know the situation lol

  51. mathslover
    • 2 years ago
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    lol

  52. Callisto
    • 2 years ago
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    *students

  53. mathslover
    • 2 years ago
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    http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx this says all that we wanted : 1) Your main question... statement 3)... that is correct 2) "2)" is correct also... (but it is not asked by you)

  54. Callisto
    • 2 years ago
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    Thanks for posting the same link again..( 3times in this post already) Why is statement (3) correct?

  55. mathslover
    • 2 years ago
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    statement 3 is correct explanation : Nitrogen and Oxygen 0% – 3.3% at least this shows that oxygen is present in coal gas.. In the given components there, oxygen is the best gas responsible for flammability.

  56. mathslover
    • 2 years ago
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    that is my opinion...

  57. Callisto
    • 2 years ago
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    Then, you're just assuming it's used to enhance flammability but not explaining it really.

  58. mathslover
    • 2 years ago
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    "sorry", you must prefer a coal gas engineer :D

  59. mathslover
    • 2 years ago
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    @vishweshshrimali5

  60. vishweshshrimali5
    • 2 years ago
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    Well @Callisto can u please give me a short summary what has happened till now

  61. Callisto
    • 2 years ago
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    I don't know if statement (3) in the question is correct Which of the following statements concerning the manufacture of town gas in Hong Kong is/are correct? (1)Town gas is produced from coal. (2)Town gas contains hydrogen as the major component. (3)Oxygen is added to enhance the flammability of town gas prior to its delievery to consumers.

  62. UnkleRhaukus
    • 2 years ago
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    statement (3) is not correct. oxygen is not added until burning

  63. vishweshshrimali5
    • 2 years ago
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    agree

  64. Callisto
    • 2 years ago
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    Sure?

  65. vishweshshrimali5
    • 2 years ago
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    I think so ?? and even wiki thinks so

  66. mathslover
    • 2 years ago
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    @vishweshshrimali5 leave wiki.. I hate it now .. :'( It is not so much reliable as per my info.... since acc. to it oxygen is not present in it but other site says it is

  67. vishweshshrimali5
    • 2 years ago
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    Oxygen is not present

  68. Callisto
    • 2 years ago
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    But ones who set the exam paper don't think so.. @vishweshshrimali5

  69. vishweshshrimali5
    • 2 years ago
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    wiki is correct it is prepared by destructive distillation that is heating in absence of oxygen

  70. vishweshshrimali5
    • 2 years ago
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    Why ?

  71. mathslover
    • 2 years ago
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    that is what i tried to say @vishweshshrimali5

  72. Callisto
    • 2 years ago
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    I don't know... That's why I asked.

  73. vishweshshrimali5
    • 2 years ago
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    You know the answer

  74. Callisto
    • 2 years ago
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    It's D, I did mention I had the answer.

  75. vishweshshrimali5
    • 2 years ago
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    Impossible

  76. Callisto
    • 2 years ago
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    Explanations?

  77. mathslover
    • 2 years ago
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    I WON

  78. vishweshshrimali5
    • 2 years ago
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    Callisto I searched for it on internet town gas also called as coal gas is obtained by destructive distillation of coal that is heating coal in absence of oxygen

  79. mathslover
    • 2 years ago
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    though m not having perfect explanation for 3) as i am not living in hong kong :( right vishwesh... wiki says that

  80. mathslover
    • 2 years ago
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    but : http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx

  81. Callisto
    • 2 years ago
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    @mathslover I'm really sorry to say it's not about winning.

  82. mathslover
    • 2 years ago
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    No problem, it was a joke though

  83. Callisto
    • 2 years ago
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    And also you cannot use that data to say it's added to enhance flammability, even though it might.

  84. mathslover
    • 2 years ago
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    as I know that this is not a quiz or anything to win about.. and if I had correct explanation that i deserved that but I don't deserve to say "I won" ..

  85. vishweshshrimali5
    • 2 years ago
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    @Callisto is sometheing still left ?

  86. Callisto
    • 2 years ago
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    You mean?

  87. vishweshshrimali5
    • 2 years ago
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    I mean have we got the answer

  88. vishweshshrimali5
    • 2 years ago
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    ??

  89. Callisto
    • 2 years ago
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    The answer is D.

  90. vishweshshrimali5
    • 2 years ago
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    I mean to say have you got that the answer D is wrong in fact

  91. Callisto
    • 2 years ago
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    The answer is provided by the examination authority

  92. vishweshshrimali5
    • 2 years ago
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    sorry I can't compete with examination authority they are subject experts

  93. vishweshshrimali5
    • 2 years ago
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    we have to accept their answer

  94. Callisto
    • 2 years ago
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    So, the only option left is that I have to remember this fact without knowing the reasons behind?

  95. vishweshshrimali5
    • 2 years ago
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    yes :'( first time I have to say that .............. sorry..... :'(

  96. vishweshshrimali5
    • 2 years ago
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    Sorry again

  97. Callisto
    • 2 years ago
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    It's okay. It's not the first time I heard it after all though

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