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# CR Although this bottle

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Senior Manager
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21 Mar 2008, 05:51
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Although this bottle is labeled “vinegar,” no fizzing occurred when some of the liquid in it was added to powder from this box labeled “baking soda.” But when an acidic liquid such as vinegar is added to baking soda the resulting mixture fizzes, so this bottle clearly has been mislabeled.

A flaw in the reasoning in the argument above is that this argument
(A) ignores the possibility that the bottle contained an acidic liquid other than vinegar
(B) fails to exclude an alternative explanation for the observed effect
(C) depends on the use of the imprecise term “fizz”
(D) does not take into account the fact that scientific principles can be definitively tested only under controlled laboratory conditions
(E) assumes that the fact of a labeling error is proof of an intention to deceive
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 06:08
Rephrase>
acid ( as viniger ) ---> added to soda ---> fizz
bottle ( lab: viniger ) ---> pow ( lab:soda) --> no fizz
Conclusion-> bottle mislabeled

A flaw in the reasoning in the argument above is that this argument

(A) ignores the possibility that the bottle contained an acidic liquid other than vinegar
This strengthens the conclusion more.
(B) fails to exclude an alternative explanation for the observed effect
Why do we need to take in account an alternate explanation, the focus is fizzing.
(C) depends on the use of the imprecise term “fizz”
Not relevent.
(D) does not take into account the fact that scientific principles can be definitively tested only under controlled laboratory conditions
The flaw seems to be not to consider the enviorment in which fizzing should occur.
(E) assumes that the fact of a labeling error is proof of an intention to deceive
To deceive - something not discussed

D for me.
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 06:25
That's what I thought but OA is B.

Can anyone shed some light?
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 06:44
Ooops !

After your OA I realized that yes the alternate xplanation can be that the powder was not good ( not soda ). Then
the bottle remains Viniger.

Also, D is out of scope.
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 06:58
Thanks
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 08:56
why not A?
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 09:29
i picked B. Its the only one that stayed within scope ... the others (C, D, E) dont really play to the argument at hand, and even if A were true, some fizzing would occur, but according to the argument, nothing happened.
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Re: CR Although this bottle [#permalink]

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21 Mar 2008, 09:37
B - easy explanation - the flaw is that the baking soda could have been mislabeled, which is an alternative explanation.
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Re: CR Although this bottle [#permalink]

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24 Mar 2008, 12:11
whooops, no A. It is funny how you revisit this and you realize you were way off.
Re: CR Although this bottle   [#permalink] 24 Mar 2008, 12:11
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