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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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?

Chemistry
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so according to you C is correct?
No
second one is correct also hydrogen is present in 50% composition in Coal gas ( town gas ) as per my info.

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Actually, I'm asking if statement (3) is correct.
oh k
wait
i think 3 is not correct as i think it is burnt in the absence of oxygen
I can't believe things can be burnt without oxygen..
(3) is nonsense
oxygen is added At consumption, along with a high temperate
But concerning town gas?
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?
a) is correct
what is town gas ?
coal gas @UnkleRhaukus
natural cola seam gas ?
i though so
I got it
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...
is not a clean industry at all
@Callisto the answer is a) coal gas contains 5% of ethylene that is used to increase luminous flame
i ment coal not cola*
A:(1) only ?
Sorry!!! @UnkleRhaukus
no
im still deciding between (1) and (2)
wait
1) is correct 2) is also correct since hydrogen is present in 50% composition in coal gas 3) not correct
wow....
sarcastic mood? ;D but that is not in options
im not sure if produced is the right wording in (1)
I'm sure (1) is not correct.
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
but how r u sure @Callisto ?
produced from naphtha and natural gas <- both are from petroleum. Also, don't forget I have the answer already.
hmn so finally 2) is correct if you r sure that 1) is not correct
how do fossil fule deposits work ,
As I mentioned before, I'm asking if (3) is correct, not (1) or (2).
It is wrong as per me..
*my info.
Explanations?
Ethylene is used for flammability of town gas not oxygen Ethylene is present in 5% composition in coal gas..
http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx Please refer to the site.
I'm sorry that I hid some words in the question. Look like I have to make it clearer...
that matters a lot callisto : hong kong
Question edited. Note that even though I'm a student here, I don't know the information related.
It's not mentioned in the book nor there is any hint in the question.
Wobbe Index 24.
Actually I am not sure that I can help you in this since I don't know about the condition in Hong Kong
I just said that even student here don't know the situation lol
lol
*students
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)
Thanks for posting the same link again..( 3times in this post already) Why is statement (3) correct?
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.
that is my opinion...
Then, you're just assuming it's used to enhance flammability but not explaining it really.
"sorry", you must prefer a coal gas engineer :D
Well @Callisto can u please give me a short summary what has happened till now
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.
statement (3) is not correct. oxygen is not added until burning
agree
Sure?
I think so ?? and even wiki thinks so
@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
Oxygen is not present
But ones who set the exam paper don't think so.. @vishweshshrimali5
wiki is correct it is prepared by destructive distillation that is heating in absence of oxygen
Why ?
that is what i tried to say @vishweshshrimali5
I don't know... That's why I asked.
You know the answer
It's D, I did mention I had the answer.
Impossible
Explanations?
I WON
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
though m not having perfect explanation for 3) as i am not living in hong kong :( right vishwesh... wiki says that
but : http://www.towngas.com/Eng/Corp/AbtTG/HKBus/Production.aspx
@mathslover I'm really sorry to say it's not about winning.
No problem, it was a joke though
And also you cannot use that data to say it's added to enhance flammability, even though it might.
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" ..
@Callisto is sometheing still left ?
You mean?
I mean have we got the answer
??
The answer is D.
I mean to say have you got that the answer D is wrong in fact
The answer is provided by the examination authority
sorry I can't compete with examination authority they are subject experts
we have to accept their answer
So, the only option left is that I have to remember this fact without knowing the reasons behind?
yes :'( first time I have to say that .............. sorry..... :'(
Sorry again
It's okay. It's not the first time I heard it after all though

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