egmat wrote:
pavanpuneet wrote:
I could get onto the correct choice based on various other routes but I still dont know how can we ascertain antecedent of "it".
Can some explain, based on the concepts of subject/object?
Hi there,
Originally developed for detecting air pollutants, a technique called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology.
A pronoun must not only have an antecedent but also have a logical antecedent.
According to this sentence, the proton-induced x-ray emission technique can quickly analyze the chemical elements in almost any substance without destroying it.
From meaning standpoint, this particular technique can analyze chemical elements in almost any substance and does not even destroy it. So where does it do the function of analyzing? In any almost any substance. So it does that function without destroying the substance.
Now, it is true that “chemical elements” does not agree in number with “it” and hence that cannot be the antecedent for “it”. Another singular entity is “technique” but it will make no sense to say that technique is used to so something without destroying the technique.
Hence, there is no problem with the reference of “it” in this sentence.
At
e-gmat we cover in detail about grammatical antecedent and logical antecedent of pronouns in our concept called
Pronouns.Hope this helps.
Thanks.
Shraddha
agreed that it refers to substance, but then what is wrong with C or D, is it because it has 2 verbs ???
(C) A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which can quickly analyze the chemical elements in almost any substance without destroying it, is finding uses in medicine, archaeology, and criminology.
Main clause
A technique originally developed for detecting air pollutants, called proton-induced x-ray emission,
is finding uses in medicine, archaeology, and criminology.
Subject: A technique
verb1: originally developed
verb2: is finding
2verbs ????
subordinate clause
which can quickly analyze the chemical elements in almost any substance without destroying it,
subject: which
verb: can quickly analyze
(D) A technique originally developed for detecting air pollutants, called proton-induced x-ray emission, which has the ability to analyze the chemical elements in almost any substance quickly and without destroying it, is finding uses in medicine, archaeology, and criminology.
Main clause
A technique originally developed for detecting air pollutants, called proton-induced x-ray emission,
is finding uses in medicine, archaeology, and criminology.
Subject: A technique
verb1: originally developed
verb2: is finding
2verbs ????
subordinate clause
which has the ability to analyze the chemical elements in almost any substance quickly and without destroying it,
subject: which
verb: has