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Scientists at the Los Alamos National Laboratory have succeeded for th
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Updated on: 17 Aug 2018, 01:52
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Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.
(A) and producing energy on a commercial scale, enough for efficient generation of electricity and heating
(B) and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat
(C) for energy production on a commercial scale, enough for generating electricity efficiently and to heat
(D) to produce energy on a commercial scale, enough for generating electricity efficiently and for heating
(E) to produce enough energy on a commercial scale for efficient generation of electricity and heat
A technology designed to mine heat from the earth's interior has succeeded for the first time in producing energy on a potentially commercial scale, according to scientists at the Los Alamos National Laboratory and the Department of Energy.
Millions of gallons of water, pumped two and a half miles deep under the mountainous New Mexico landscape, was heated by underground rock to more than 350 degrees Fahrenheit, enough for efficient generation of electricity as well as heating of factories and homes. By the end of a monthlong trial run the project, Hot Dry Rock, was generating enough usable heat to power a town of 2,000 people.
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26 Sep 2008, 14:07
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Nihit wrote:
. Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes. A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat
I think the catch here is to recognize the progressive and non progressive forms !!!!! Another trap question @#$%^&* !!!!!!
Mining heat from X to prduce Y
"and" --> incorrect here.
See why "and" is inappropriate here have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale = succeded for first time in doing X and doing Y. above sentence is gramatically correct.. but logically doesn't make sense.
it means first time producing energy on commerical scale but that's not intention of author. ..[ energy might be produced on commerical sacle by other methods ...]
first time in doing X from Z to product Y.
I hope it clear.
Between D and E..
D looks better.
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25 Sep 2008, 14:09
I pick D.
Did anyone else think that "to" was critical in the construction of the sentence?
"and" is incorrect here because interior must be followed by a comma, for "and" to be in play.
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.
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17 Jul 2010, 09:54
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Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.
A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating - awkward and not parallel B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat - wrong parallelism C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat - awkward D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating - parallel and conveys the meaning E. to produce enough energy on a commercial scale for efficient generation of electricity and heat - awkward
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18 Apr 2013, 08:54
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A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating -- heating is not || to generation of electricity -- correct form generating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat -- to heat is not || to be generated efficiently -- correct form to generate C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat -- to heat is not || to for generating correct form to generate D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating -- for heating is || to for generating --right answer E. to produce enough energy on a commercial scale for efficient generation of electricity and heat -- heat is not || to generation of electicity -- correct form heat || generate
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18 Apr 2013, 13:19
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MBAhereIcome wrote:
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes. A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat
here is parallelism error.The parallel structure is enough for...............and for........... Only option d follow the parallel structure enough for...............and for........... Thus D is the correct answer
Scientists at the Los Alamos National Laboratory have succeeded for th
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22 May 2013, 02:27
Hi,
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes
A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat
In the above question :
The actual sentence has problem in modifier as enough of minning heat and producing energy does not make sense ,we need something that says energy produced ,which is enough for efficient generation of electricity and heat .
So based on this analysis we have only two choices D,E .
Now in choice D :
something is done to produce energy , and that energy is enough for generating electricity efficiently and for heating
I agree that this choice maintains parallelism , but here the modifer efficiently is used only for electricity but not for heat .
Hence I eliminated this choice
In Choice E :
something is done to produce enough energy for efficient generation for electricity and heat
The problem with this sentence is that it changes the meaning by saying something is done to produce enough energy (i.e not energy but enough energy), but the other problem related to modifier in the 2nd part of this sentence -"efficient generation of electricity and heat"-has been rectified .
My question is how to choose between the above 2 choices .
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30 Jul 2013, 00:29
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this is a very good || ism question.
I had gone thru one of RON's videos and he had taken this question as an example to explain ||ism.
The main situation here is to get idea what the question means.
1)Scientists ...... have succeeded for the first time......"to" produce energy on a commercial scale
now the question arises for what???????
the idea conveyed following this should be parallel 2)it means that the energy produced will be used "for generating electricity" and" for heating" factories and homes.
So option D is concise and conveys the idea perfectly.
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08 Aug 2013, 06:38
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amitanand wrote:
Q: Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes. A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat[/color]
This is a tricky parallelism question or meaning based question depending on how you look at it.
When you read this sentence you need to break down to understand what did Scientists succeeded for the first time - I) in mining heat from the Earth’s interior II) producing energy on a commercial scale
Did they do both of the above noted items for the 1st time? As you re-read you'll note that I and II are not parallel but more of I leads to II - Hence cross of A & B since we don't need an AND between I and II
The later part of sentence need to be looked at whether the phrase captures the effects/results of the earlier statement III) electricity to be generated efficiently IV) heating factories
This later part describes the effects of the earlier phrase so it requires ,verbing modifier and III and IV capture the effects so they need to be parallel - Hence cross of C and E
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12 Sep 2013, 20:52
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Even in the original sentence, there are two things being accomplished by energy:
1. Efficient generation of electricity 2. Heating factories and homes
So, D is not changing the meaning of the original sentence.
E has a classical parallelism issue. The right side of and has heat. So, there must be something on the left side of and that is parallel to heat. What is on the left side of and that is parallel to heat? Let’s look at the sentence with choice E:
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior to produce enough energy on a commercial scale for efficient generation of electricity and heat factories and homes
Well, on the left side, the closest entity parallel to heat is produce!! So, E has the following meaning:
Scientists have succeeded in mining heat from the Earth’s interior to:
1. produce energy for efficient generation of electricity and 2. heat factories and homes
At the very least, the meaning portrayed above is a deviation from the intended meaning, which is:
Scientists have succeeded in mining heat from the Earth’s interior to produce energy enough for:
1. generating electricity efficiently 2. heating factories and homes
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Scientists at the Los Alamos National Laboratory have succeeded for th
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12 Sep 2013, 22:09
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Ferdous wrote:
Hi,
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes
A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat
In the above question :
The actual sentence has problem in modifier as enough of minning heat and producing energy does not make sense ,we need something that says energy produced ,which is enough for efficient generation of electricity and heat .
So based on this analysis we have only two choices D,E .
Now in choice D :
something is done to produce energy , and that energy is enough for generating electricity efficiently and for heating
I agree that this choice maintains parallelism , but here the modifer efficiently is used only for electricity but not for heat .
Hence I eliminated this choice
In Choice E :
something is done to produce enough energy for efficient generation for electricity and heat
The problem with this sentence is that it changes the meaning by saying something is done to produce enough energy (i.e not energy but enough energy), but the other problem related to modifier in the 2nd part of this sentence -"efficient generation of electricity and heat"-has been rectified .
My question is how to choose between the above 2 choices .
Thanks, Deepak
Hi,
Let me write the original sentence again.
• Scientists at the Los Alamos National Laboratory have succeeded for the first time in
o mining heat from the Earth’s interior and o producing energy on a commercial scale, enough for
efficient generation of electricity and heating factories and homes.
In the original sentence, “efficient” is modifying only “generation of electricity”. This is because it is non sensical to say that mining heat and production of energy provide efficient heating at homes. Similarly the original sentence only conveys “generation of electricity”. “heating homes and factories” is not connected to the “generation” part. So “efficient generation” and “heating” are parallel in this sentence.
The error in this sentence is the representation of “mining” and “producing” as separate independent entities. (As you have mentioned). Choice D appropriately rectifies this error.
Now let us look at the whole sentence with choice E.
• Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior to produce enough energy on a commercial scale for efficient generation of
o electricity and o heat
• factories and homes
Can you see that there is a dangling noun at the end without any proper connection?
This is a very obvious error and can be used as a strong reason to eliminate option E, even if you understood the meaning in a different sense.
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21 Jan 2016, 21:12
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes
This is purely a parallelism play and one needn’t go farther.
A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating --- 1. It should be in mining and in producing; 2.it should be ‘generation of and ‘heating of’ to be parallel B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat--- 1. in mining and producing is wrong as in A. 2.-- for electricity to be generated efficiently and to heat---un//. C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat --- --- for generating electricity efficiently and to heat --- un//.
D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating --- good-- E. to produce enough energy on a commercial scale for efficient generation of electricity and heat --- for efficient generation of electricity and heat--- un// _________________
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13 Aug 2016, 04:04
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes. A. and producing energy on a commercial scale, enough for efficient generation of electricity and heating B. and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat C. for energy production on a commercial scale, enough for generating electricity efficiently and to heat D. to produce energy on a commercial scale, enough for generating electricity efficiently and for heating E. to produce enough energy on a commercial scale for efficient generation of electricity and heat
ans D We should first concentrate on the intended meaning, it's not the first time energy would be produced on a commercial scale. So we can eliminate A and B. option C: for generating .... to heat is not parallel option E: heat factories and homes doesn't sound good Option D: for generating and for heating parallel and correct
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21 Sep 2016, 09:05
abhi1693 wrote:
I think D is the right answer.
'have succeeded' is the verb used for main action As a general rule, all the direct consequences or supporting clauses have -ing modifiers in them.
Quote:
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth’s interior to produce energy on a commercial scale, enough for generating electricity efficiently and for heating factories and homes.
Correct answer is (D) for the highlighted portions..
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02 Mar 2019, 19:36
Use of "AND": And is used to describe two separate, independent clauses. However, "mining heat" and "producing energy" are not independent. Therefore, we shouldn't use and => A and B are incorrect. C is incorrect because of a parallelism issue: "for generating electricity" is not parallel to "to heat" E also is incorrect because of a parallelism issue: "for efficient generation" is not parallel to "heat"
In D, "for generating electricity efficiently" is parallel to "for heating" and "to produce energy on a commercial scale" logically follows "mining heat". Hence D is the correct answer!
gmatclubot
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67% (01:36) correct 
