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GMAT 2 (CR)

Description: GMAT Critical Reasoning Online Preparation and Practice Test and this test is also useful for MBA CAT, XAT, MAT and Other Entrance Exams
Number of Questions: 15
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Tags: GMAT CR GMAT Critical Reasoning GMAT MBA CAT XAT Conclusion Weaken Inference Parallel Reasoning
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Largemouth bass are usually found living in shallow waters near the lake banks wherever minnows are found. There are no largemouth bass living on this side of the lake. Which of the following would critically complete an argument with the preceding premises given? I. Therefore, there are no minnows on this side of the lake. II. Therefore, there are probably no minnows on this side of the lake. III. Therefore, there will never be any minnows on this side of the lake.

  1. I only

  2. II only

  3. III only

  4. I and III only

  5. II and III only


Correct Option: B
Explanation:

(2) II is the only one of the three, which is completely supported by the argument. Ill is easily dismissed. That there are no minnows on this side of the lake now surely does not mean that there will never be any, any more than the fact that there are no children in the park now means that there never will be any children in the park. I is very close to II and differs only in the qualification introduced by the word probably, but that is an important qualification. The author states specifically that bass are usually found wherever there are minnows. So where there are no bass, he expects to find no minnows. But, of course, he cannot be certain. So I overstates the case.

It is sometimes argued that we are reaching the limits of the earths capacity to supply our energy needs with fossil fuels. In the past ten years, however, as a result of techno critical progress making it possible to extract resources from even marginal wells and mines, yields from oil and coal fields have increased tremendously. There is no reason to believe that there is a limit to the earths capacity to supply our energy needs. Which of the following statements most directly contradicts the conclusion drawn above?

  1. Even if we exhaust our supplies of fossil fuel, the earth can still be mined for uranium for nuclear fuel.

  2. The technology needed to extract fossil fuels from marginal sources is very expensive.

  3. Even given the improvements in technology, oil and coal are not renewable resources; so we will eventually exhaust our supplies of them.

  4. Most of the land under which marginal oil and coal supplies lie is more suitable to cultivation or pasturing than to production of fossil fuels.

  5. The fuels that are yielded by marginal sources tend to be high in sulphur and other undesirable elements which aggravate the air pollution problem.


Correct Option: C
Explanation:

(3) The author's claim is that we have unbounded resources, and he tries to prove this by showing that we are getting better and better at extracting those resources from the ground. But that is like saying, 'I have found a way to get the last little bit of toothpaste out of the tube; therefore, the tube will never run out. (3) calls our attention to this oversight.

Some sociologists believe that religious sects such as the California-based Waiters, who believe the end of the world is imminent and seek to purify their souls by, among other things, abstaining completely from sexual relations, are a product of growing disaffection with modern, industrialized and urbanized living. As evidence, they cite the fact that there are no other active organizations of the same type which are more than 50 or 60 years old. The evidence, however, fails to support the conclusion for __________.

Which of the following is the most critical completion of the passage?

  1. the restrictions on sexual relations are such that the only source of new members is outside recruitment, so such sects tend to die out after a generation or two

  2. it is simply not possible to gauge the intensity of religious fervor by the length of time the religious sect remains viable

  3. the Waiters group may actually survive beyond the second generation of its existence

  4. there are other religious sects that emphasize group sexual activity which currently have several hundred members

  5. the Waiters are a California-based organization and have no members in the Northeast, which is even more heavily urban and industrialized than California


Correct Option: A
Explanation:

(1) The author places himself in opposition to the sociologists whom he cites. He claims an alternative interpretation of the evidence. In other words, the most logical continuation of the passage will be the one that explains why such sects are not a recent phenomenon even though there are no old ones around. (1) does this neatly. Since the members abstain from sexual relations, they will not reproduce members and the sect will tend to die out. This explains why there are none more than 50 or 60 years old.

In recent years, unions have begun to include in their demands at the collective bargaining table requests for contract provisions which give labor an active voice in determining the goals of a corporation. Although it cannot be denied that labor leaders are highly skilled administrators, it must be recognized that their primary loyalty is and must remain to their membership, not to the corporation. Thus, labor participation in corporate management decisions makes about as much sense as __________. Which of the following represents the best continuation of the passage?

  1. allowing inmates to make decisions about prison security

  2. a senior field officer asking the advice of a junior officer on a question of tactics

  3. a university's asking the opinion of the student body on the scheduling of courses

  4. Chicago's mayor inviting the state legislators for a ride on the city's subway system

  5. the members of a church congregation discussing theology with the minister


Correct Option: A
Explanation:

(1) Here we are looking for the most perfect analogy. Keep in mind, first, that the author opposes the move, and second, all of the features of the union-management situation in particular that they are adversaries. (1) captures both elements. The relationship between prison administrators and inmates is adversarial, and the suggestion that inmates make decisions on security is outrageous enough that it captures also the first element.

In recent years, unions have begun to include in their demands at the collective bargaining table requests for contract provisions which give labor an active voice in determining the goals of a corporation. Although it cannot be denied that labor leaders are highly skilled administrators, it must be recognized that their primary loyalty is and must remain to their membership, not to the corporation. Thus, labor participation in corporate management decisions makes little sense. The author's reasoning leads to the further conclusion that

  1. the authority of corporate managers would be symbolically undermined if labor leaders were allowed to participate in corporate planning

  2. workers have virtually no idea of how to run a large corporation

  3. workers would not derive any benefit from hearing the goals of corporate management explained to them at semiannual meetings

  4. the efficiency of workers would be lowered if they were to divide their time between production line duties and management responsibilities

  5. allowing labor a voice in corporate decisions would involve labor representatives in a conflict of interest


Correct Option: E
Explanation:

(5) The author's reason for rejecting the notion of labor participation in management decisions is that the labor leaders first have a responsibility to the people they represent and that the responsibility would color their thinking about the needs of the corporation. His thinking is reflected in the adage: No man can serve two masters.

We must do something about the rising cost of our state prisons. It now costs an average of $132 per day to maintain a prisoner in a double-occupancy cell in a state prison. Yet, in the most expensive cities in the world, one can find rooms in the finest hotels which rent for less than $125 per night. The argument above might be criticized in all of the following ways EXCEPT that

  1. it introduces an inappropriate analogy

  2. it relies on an unwarranted appeal to authority

  3. it fails to take account of costs which prisons have but hotels do not have

  4. it misuses numerical data

  5. it draws a faulty comparison


Correct Option: B
Explanation:

(2) The chief failing of the argument is that it draws a false analogy. Since prisons are required to feed and maintain as well as house prisoners (not to mention the necessity for security), the analogy to a hotel room is weak at best.

An independent medical research team recently did a survey at a mountain retreat founded to help heavy smokers or cut down on their cigarette smoking. Eight percent of those persons smoking three packs a day or more were able to cut down to one pack a day after they began to try End-Smoke with its patented desire suppressant. Try End-Smoke to help you cut down significantly on your smoking. Which of the following could be offered as valid criticism of the above advertisement?

I. Heavy smokers may be physically as well as psychologically critically addicted to tobacco.II. A medicine that is effective for very heavy smokers may not be effective for the population of smokers generally. III. A survey conducted at a mountain retreat to aid smokers may yield different results than one would expect under other circumstance.

  1. I only

  2. II only

  3. III only

  4. II and III only

  5. I, II, and III


Correct Option: D
Explanation:

(4) The ad is weak for two reasons. First, although it is addressed to smokers in general, the evidence it cites is restricted to heavy (three-packs-a-day) smokers. Second, the success achieved by the product was restricted to a highly specific and unusual location - the mountain retreat of a clinic with a population trying hard to quit smoking. Thus, II will undermine the appeal of the advertisement because it cites the first of the weaknesses. Ill also will tell against the ad since it mentions the second of these weaknesses. I, however, is irrelevant to the ad's appeal since the cause off a smoker's addiction plays no role in the claim of this ad to assist smokers in quitting or cutting down.

When we reflect on the structure of moral decisions, we come across cases in which we seem to be subject to mutually exclusive moral demands. But the conflict is just that, a seeming one. We must be careful to distinguish two levels of moral thinking: The prima facie and the critical. A prima facie moral principle is analogous to a workaday tool, say a(n)(6). It is versatile, that is, useful in many situations, and at your fingertips, while, no special skill is needed to use it. Unfortunately, the value of a prima facie principle derives from its non-specific language, which means that in some situations it will turn out to be an oversimplification. For example, two fairly straightforward moral rules such as keep all promises and assist others in dire need, which work well enough in most cases, seem to clash in the following scenario: I have promised a-friend I will run a very important errand on his behalf (and he is relying on me); but while en route I happen across a person in need of emergency medical assistance, which I can provide, but only at the cost of leaving my original purpose unaccomplished. The appearance of conflict arises from the choice of tools used in analyzing the situation the two prima facie rules do not cut finely enough. What is wanted, therefore, is a more refined analysis which will be applicable to the specific situation. At this, the second level of moral thinking, critical moral thinking employs a finer system of categories so that the end result is_(7)_.

  1. surgical scalpel

  2. kitchen knife

  3. electrical generator

  4. tuning fork

  5. library book


Correct Option: B
Explanation:

This is essentially an analogy question. In this question, we are looking for the tool that is most analogous to a rule-of-thumb moral principle. Our task is made easier by the string of adjectives that follows the blank. We need a tool that is useful in many situations, which rules out a tuning fork (4) and an electrical generator (3), both of which have highly specialized functions. Moreover, we need a tool that requires no special training, so we can eliminate answer (1). Finally, although a library book requires no special training, it has only one use - to be read. Though the knowledge it contains may be generally useful, the book itself has only one use.

When we reflect on the structure of moral decisions, we come across cases in which we seem to be subject to mutually exclusive moral demands. But the conflict is just that, a seeming one. We must be careful to distinguish two levels of moral thinking: The prima facie and the critical. A prima facie moral principle is analogous to a workaday tool, say a(n)(6). It is versatile, that is, useful in many situations, and at your fingertips, while, no special skill is needed to use it. Unfortunately, the value of a prima facie principle derives from its non-specific language, which means that in some situations it will turn out to be an oversimplification. For example, two fairly straightforward moral rules such as keep all promises and assist others in dire need, which work well enough in most cases, seem to clash in the following scenario: I have promised a-friend I will run a very important errand on his behalf (and he is relying on me); but while en route I happen across a person in need of emergency medical assistance, which I can provide, but only at the cost of leaving my original purpose unaccomplished. The appearance of conflict arises from the choice of tools used in analyzing the situation the two prima facie rules do not cut finely enough. What is wanted, therefore, is a more refined analysis which will be applicable to the specific situation. At this, the second level of moral thinking, critical moral thinking employs a finer system of categories so that the end result is_(7)_.

  1. not two conflicting moral judgments, but a single consistent moral judgment

  2. an advance for the human species over the savagery of our forebears

  3. the improvement of medical care for the population in general

  4. moral principles of higher levels of abstraction which are applicable to larger numbers of cases

  5. that value judgments will no longer depend on the particulars of any given situation


Correct Option: A
Explanation:

(1) The point of the passage is that a moral decision sometimes seems difficult because we are using moral principles which are too general. They work most of the time, but sometimes they are too abstract, and as a result, two or more of them give contradictory results.

I often hear smokers insisting that they have a right to smoke whenever and wherever they choose, as though there are no conceivable circumstances in which the law might not legitimately prohibit smoking. This contention is obviously indefensible. Implicit in the development of the concept of a right is the notion that one person's freedom of action is circumscribed by the_(10). It requires nothing more than common sense to realize that there are situations in which smoking presents a clear and present danger: in a crowded theater, around flammable materials, during take-off in an airplane. No one would seriously deny that the potential harm of smoking in such circumstances more than outweighs the satisfaction a smoker would derive from smoking. Yet, this balancing is not unique to situations of potential catastrophe. It allies equally as well to situations where the potential injury is small, though in most cases, as for example a person's table manners, the injury of the offended person is so slight we automatically strike the balance in favor of the person acting. But once it is recognized that a balance of freedoms must be struck, it follows that a smoker has a right to smoke only when and where(11)_.

  1. constitution of our nation

  2. laws passed by Congress and interpreted by the Supreme Court

  3. interest of any other person to not be injured or inconvenienced by that action

  4. rights of other persons not to smoke

  5. rights of non-smoking persons not to have to be subjected to the noxious fumes of tobacco smoking


Correct Option: C
Explanation:

(3) Note the word right is italicized in the first sentence of the paragraph. The author is saying that this idea of a right can be only understood as the outcome of a balancing of demands. The smoker has an interest in smoking; the non-smoker has an interest in being free from smoke; so the question of which one actually has a right to have his interest protected depends upon which of those interests is considered to be more important. In some cases the balance is easily struck; in other cases it is difficult; but in all cases, the weighing, implicitly or explicitly, occurs. (3) captures the essence of this thought. In the case of smoking, the interests of both parties must be taken into account.

I often hear smokers insisting that they have a right to smoke whenever and wherever they choose, as though there are no conceivable circumstances in which the law might not legitimately prohibit smoking. This contention is obviously indefensible. Implicit in the development of the concept of a right is the notion that one person's freedom of action is circumscribed by the_(10). It requires nothing more than common sense to realize that there are situations in which smoking presents a clear and present danger: in a crowded theater, around flammable materials, during take-off in an airplane. No one would seriously deny that the potential harm of smoking in such circumstances more than outweighs the satisfaction a smoker would derive from smoking. Yet, this balancing is not unique to situations of potential catastrophe. It allies equally as well to situations where the potential injury is small, though in most cases, as for example a person's table manners, the injury of the offended person is so slight we automatically strike the balance in favor of the person acting. But once it is recognized that a balance of freedoms must be struck, it follows that a smoker has a right to smoke only when and where(11)_.

  1. the government chooses to allow him to smoke

  2. he finally decides to light up

  3. his interest in smoking outweighs the interests of other persons in his not smoking

  4. he can ensure that no other persons will be even slightly inconvenienced by his smoking

  5. there are signs which explicitly state that smoking is allowed in that area


Correct Option: C
Explanation:

(3) Here the author makes his general discussion of the balancing of interests to determine rights specifically applicable to the question of smoking. A smoker will have a right to smoke when and where his interests outweigh the interests of those who object, and (3) provides a pretty clear statement of this conclusion.

I often hear smokers insisting that they have a right to smoke whenever and wherever they choose, as though there are no conceivable circumstances in which the law might not legitimately prohibit smoking. This contention is obviously indefensible. Implicit in the development of the concept of a right is the notion that one person's freedom of action is circumscribed by the_____. It requires nothing more than common sense to realize that there are situations in which smoking presents a clear and present danger: in a crowded theater, around flammable materials, during take-off in an airplane. No one would seriously deny that the potential harm of smoking in such circumstances more than outweighs the satisfaction a smoker would derive from smoking. Yet, this balancing is not unique to situations of potential catastrophe. It allies equally as well to situations where the potential injury is small, though in most cases, as for example a person's table manners, the injury of the offended person is so slight we automatically strike the balance in favor of the person acting. But once it is recognized that a balance of freedoms must be struck, it follows that a smoker has a right to smoke only when and where_____.

The author's strategy in questioning the claim that smokers have a right to smoke is to

  1. cite facts which are not generally known

  2. clarify and fully define a key concept

  3. entertain arguments on a hypothetical case

  4. uncover a critical inconsistency

  5. probe the reliability of an empirical generalization


Correct Option: B
Explanation:

(2) The whole passage is to clear up a misunderstanding about the concept of a right. The author explains that the term is misused since most people fail to realize that the right is not absolute, but is qualified by the interests and claims of other persons.

Land Management Specialist: Building the Glenn Canyon dam on the Colorado river caused unforeseen environmental effects. One of these is that, by preventing annual floods, the dam prevents the river from stirring up sediments collected on the river bottom and depositing them high on the banks of the river. The deposited sediments are needed to create and maintain sandbars, which form natural habitats for native fish. By releasing water from the dam annually, we will flood the river and thus recreate the sandbars normally found below the dam. Which of the following must be true if the prediction of the land management specialist above is also to prove true?

  1. There are no other effects of the dam which will prevent the native fish of the river from using the new sandbars below the dam.

  2. The flood caused by massively releasing water from the dam will be like a natural flood in every major respect.

  3. The size of a sandbar on a river always stays the same or increases after a flood.

  4. Any other dams upriver from the Glen Canyon dam must also release enough water to cause a flood in order for the flood from the Glen Canyon dam to be successful.

  5. The dam does not prevent the flow of sediments from upriver needed to replenish the sediments that inevitably wash downstream over time.


Correct Option: E
Explanation:

(5) THE CONCLUSION: Release of water from Glenn Canyon dam annually will flood the rivers and recreate the sandbars normally found below the dam.

THE EVIDENCE: The dam prevents the stirring up of deposits at the river bottom and prevents their depositing on high bank sides. (5) just rephrases the conclusion and states that though sediments are not blocked or stopped by the dam, the hampered flow does not allow the phenomenon of sandbars to occur. So, (5) is the answer.

Choose the best completion of the following paragraph. Parochial education serves the dual functions of education and religious instruction, and church leaders are justifiably concerned to impart important religious values regarding relationships between the sexes. Thus, when the administrators of a parochial school system segregate boys and girls in separate institutions, they believe they are helping to keep the children pure by removing them from a source of temptation. If the administrators realized, however, that children would be more likely to develop the very attitudes they seek to engender in the company of the opposite sex, they would __________.

  1. put an end to all parochial education

  2. no longer insist upon separate schools for boys arid girls

  3. abolish all racial discrimination in the religious schools

  4. stop teaching foolish religious tripe, and concentrate instead on secular educational programs

  5. reinforce their policies of isolating the sexes in separate programs


Correct Option: B
Explanation:

(2) Careful reading of the paragraph shows that the author's attitude toward parochial education is that he believes the insistence on instruction in religious values is justifiable; he disagrees, however, on the question of how best to inculcate those values. He believes that the proper attitude toward relations between the sexes could best be learned by children in the company of the other sex.

Every element on the periodic chart is radioactive, though the more stable elements have half-lives which are thousands and thousands of years long. When an atom decays, it splits into two or more smaller atoms. Even considering the fusion taking place inside of stars, there is only a negligible tendency for smaller atoms to transmute into larger ones. Thus, the ratio of lighter to heavier atoms in the universe is increasing at a measurable rate. Which of the following sentences provides the most critical continuation of this paragraph?

  1. Without radioactive decay of atoms, there could be no solar combustion and no life as we know it.

  2. Therefore, it is imperative that scientists begin developing ways to reverse the trend and restore the proper balance between the lighter and the heavier elements.

  3. Consequently, it is possible to use a shifting ratio of light to heavy atoms to calculate the age of the universe.

  4. Therefore, there are now more light elements in the universe than heavy ones.

  5. As a result, the fusion taking place inside stars has to produce enough atoms of the heavy elements to offset the radioactive decay of large atoms elsewhere in the universe.


Correct Option: C
Explanation:

(3) The last sentence of the paragraph is very important. It tells us that the proportion of light atoms in the universe is increasing (because heavy ones decay into light ones, but the reverse process does not occur) and that this trend can be measured. By extrapolation back into time on the basis of present trends, scientists can find out when it all began.

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