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# Q) In broad thermodynamic terms, the distinction between

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28 Jan 2012, 23:57
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Q) In broad thermodynamic terms, the distinction between solar energy and energy derived from fossil fuel is artificial.Fossil Fuel molecules represent the decayed reamins of plants.All of the energy these fossil fuels contain once resided in the sun and was , so to speak , trapped by plants here on Earth through the process of photosynthesis, whereupon it was housed,principally, within the carbohydrate molecules of which the plants were composed.The process of burning unleashes that energy , and when we run our lights ,factories , and automobiles by burning fossil fuels ........

Which of the following is the most logical completion of the passage above

A) We deplete our stores of an ever more precious resource .
B) We use energy that is , in fact,derived from the sun.
C) We spend the legacy left to us by our prehistoric ancestors .
D) We mimic the process of energy generation that exists in the sun .
E) We return to the sun that which originally resided there .

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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29 Jan 2012, 01:50
IMO D.

The passage telling about processing of energy.
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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29 Jan 2012, 03:18
Hi,

I think is should be B

Q) In broad thermodynamic terms, the distinction between solar energy and energy derived from fossil fuel is artificial.Fossil Fuel molecules represent the decayed reamins of plants.All of the energy these fossil fuels contain once resided in the sun and was , so to speak , trapped by plants here on Earth through the process of photosynthesis, whereupon it was housed,principally, within the carbohydrate molecules of which the plants were composed.The process of burning unleashes that energy , and when we run our lights ,factories , and automobiles by burning fossil fuels ........

Which of the following is the most logical completion of the passage above

A) We deplete our stores of an ever more precious resource . Irrelevant Information
B) We use energy that is , in fact,derived from the sun. Plants => use sun's energy => Fossils => Fuel => Humans Burn
C) We spend the legacy left to us by our prehistoric ancestors . Irrelevant Information
D) We mimic the process of energy generation that exists in the sun . No where in the passage is it mentioned how energy is generated in the sun
E) We return to the sun that which originally resided there . Irrelevant Information
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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29 Jan 2012, 05:19
Between B and D I will go with B.
Quote:
In broad thermodynamic terms, the distinction between solar energy and energy derived from fossil fuel is artificial

Here the difference between the two energy is being discussed and D refers to the process of energy generation, that's-why I think D is out of scope.

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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29 Jan 2012, 20:47
B

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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30 Jan 2012, 08:38
B is the solution .
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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30 Jan 2012, 09:16
strongly feel, answere is d, since the passage is presenting a comparative study on 2 cycles...

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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30 Jan 2012, 10:44
I am also with D man.
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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30 Jan 2012, 11:16
B for me aswell

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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30 Jan 2012, 22:38
Thanks everybody for the reply . I agree with B 100%.

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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31 Jan 2012, 05:27
Well I am 99% sure that it's B because it is a logical conclusion for the paragraph. The topic of this paragraph is fossil fuel is the same solar energy. It goes through how solar energy is converted into fossil energy by plants. Which means releasing fossil energy = using solar energy. Therefore solar energy = fossil both these energy comes from/derives from the sun. Not D cause nothing about how the Sun creates or processes solar energy

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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25 Feb 2012, 16:42
Between B and D, it has to be B

THe process of burning unleashes energy, this means its about consuption of this eneregy.

B refers to use of energy, D refers to creation of energy.

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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25 Feb 2012, 17:06
+1 B

Based only on the information provided, we don't know how the sun generates energy.

In addition, an engine of a car doesn't work like the fision and fusion processes in the sun.
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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26 Feb 2012, 02:39
IMO B,

Facts in the passage - "All of the energy these fossil fuels contain once resided in the sun and was.......trapped by plants here on Earth " ....."The process of burning unleashes that energy ".

Hence option B -We use energy that is , in fact,derived from the sun.
Option D is irrelevant as there is not information in the passage on the process of energy generation.

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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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14 Mar 2012, 01:57
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this is an inference question and of course there is a tie between B and D

B --> clearly , Plants use sun's energy => became Fossils => converted to Fuel => energy liberated by Humans Burn .. so finally suns energy is used in other ways

D --> No process regarding energy generation is explained.

so B is the correct answer
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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15 Mar 2012, 03:36
Straight B as other options are just irrelevant.
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Re: Thermodynamic - Critical Reasoning(Inference) [#permalink]

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09 May 2012, 13:38
I picked B for the same reason as above but I could not find the OA to confirm it. Does any one know?

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Re: Thermodynamic - Critical Reasoning(Inference)   [#permalink] 09 May 2012, 13:38
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