Critical Reasoning section 4 MCQ Detailed Explanation And More Example

MOST IMPORTANT verbal reasoning - 4 EXERCISES

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The following question based on Critical Reasoning topic of verbal reasoning

Questions : A drug that is very effective in treating some forms of cancer can, at present, be obtained only from the bark of the Raynhu, a tree that is quite rare in the wild. It takes the bark of approximately 5,000 trees to make one pound of the drug. It follows, then, that continued production of the drug must inevitably lead to the raynhu's extinction. Which of the following, if true, most seriously weakens the above conclusion?

(a) The drug made from Raynhu bark is dispensed to doctors from a central authority.

(b) The Raynhu generally grows in largely inaccessible places.

(c) The drug made from the Raynhu bark is expensive to produce.

(d) The Raynhu can be propagated from cuttings and cultivated by farmers.

e) None of the above

The correct answers to the above question in:

Answer: (d)

Provides an alternate source of the Raynhu bark. Even though the tree is rare in the wild, the argument is silent on the availability of cultivated trees. The author of the argument must be assuming that there are no Raynhu trees other than those in the wild, in order to make the leap from the stated evidence to the conclusion that the Raynhu is headed for extinction.

The option (d) weakens the assupmtion - 'there are limited raynhu trees' - by saying that there are other ways as well for the propogation of Raynhu.

The other answer choices all contain information that is irrelevant. Note that the correct choice does not make the conclusion of the argument impossible.

In fact, it is possible that there may be domesticated Raynhu trees and the species could still become extinct. Answer choice (d) is correct because it makes the conclusion about extinction less likely to be true.

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Read more question and answers set 4 Based Verbal Reasoning Questions and Answers

Question : 1

Read the given information and answer the question. The government of State D was recently criticised for accepting a proposal as per which schools in the State will not conduct exams up to standard nine. Rather, schools will promote all the students up to standard nine and from standard nine onwards the students would either be passed or failed depending upon their marks in the exams. Which of the following may not be a reason for the criticism of the government of State D for accepting the proposal ?

a) Several parents have raised concern that students would not be willing to pay attention in class and retain the information because they do not have to write exams.

b) Many teachers are of the opinion that students have become very competitive and are mainly focused on acquiring marks rather than gaining knowledge.

c) Students learn to write exam papers in a stipulated period of time with practice of solving exam papers over the years and many students may not be able to grasp this directly in the standard nine.

d) Studies suggest that students become less prone to exam anxiety and exam fear when they get used to passing exams over the years as compared to when they do not appear for an exam at all.

e) Experts suggest that the special needs of children can be adequately assessed through examining of their exam papers and early assessment helps initiate early intervention and major projects through exams.

Answer: (d)

Question : 2

The purpose of the proposed law requiring a doctor's prescription for obtaining hypodermic needles is to lower the incidence of drug-related deaths, both accidental and intentional, involving hypodermic needles. But even knitting needles can be lethal if they fall into the wrong hands; yet everyone would agree that imposing legal restrictions on obtaining knitting needles would be preposterous. Hence the proposed law involving hypodermic makes no sense and should not be enacted. Which of the following, it true, would provide most support for the argument above?

a) Knitting needles have been known to cause injury and death.

b) The proposed law would not deter the sort of activity known to result in drug-related deaths.

c) The benefits of hypodermic needles outweigh those of knitting needles.

d) Knitting needles are not readily available to anybody who wants to obtain them.

e) None of the above

Answer: (a)

The argument is essentially that the proposed law makes no sense because knitting needles are dangerous as well. The argument relies explicitly on an analogy between hypodermic and knitting needles. Thus, the two must be similar in all respects relevant to the argument.

Otherwise, the argument is unconvincing. (a) affirms that knitting needles are in fact dangerous, thereby affirming the analogy between the two types of needles.

(b) and (c) each in its own way supports the bare assertion that the proposed law might not be effective. However, none of these answer choices affirms the argument's essential reasoning.

(d) actually weakens the argument, by providing a reason why hypodermic needles and knitting needles are not relevantly similar.

Question : 3

Govt of India is providing a unique identity card to every citizen. Some important information like his blood group, permanent address, bank account number and mobile/ telephone number is mentioned on this card to identify that person for security purpose or in case some serious accident takes place. Which of the following conclusions can be drawn from the above information?

a) In a country like India, which is one of the most populated countries in the world, it is not possible to provide every citizen a unique identification card.

b) None is supposed to forget his phone number under any circumstances.

c) The police need this information (on the card), especially when the accident is fatal.

d) Blood cannot be transfused until its group is mentioned on the card.

e) None of these

Answer: (c)

Since these cards are issued to identify an individual for security purposes or in case of any accident, we may conclude that the police need this information to complete the investigation. (1) cannot be concluded because it is mentioned that the govt is providing unique identity cards to all citizens is impossible.

Question : 4

Study the following information carefully and answer the question. In a recent performance approval done by Company X, more than 70% of the employees were found to be underperforming. ''I think that the restructuring done by the company in the previous year is responsible for the underperformance of the employees''- HR manager of company X. Which of the following statements weakens the statement of HR Manager of Company X ?

a) The incentives linked to performance were abolished upon restructuring creating dissatisfaction among employees.

b) The number of projects in Company X increased by 60% this year thereby increasing the burden on the existing employees this year.

c) After restructuring the decision making power was taken away from employees thus delaying the work by long hours.

d) After restructuring the employees were required to report to multiple bosses/ officers leading to ambiguity at the work place.

e) Adequate training was not provided to the employees transferred to different departments and locations after restructuring.

Answer: (b)

Directions:

Attempt these questions based on the information given against each.

Question : 5

Our school district should not spend its money on the new Verbal Advantage reading program. After all, our students get all the reading practice they need by studying history and science. The argument above depends on which the following assumptions?

a) The Verbal Advantage program would not help the students learn history and science.

b) The Verbal Advantage program involves only reading practice.

c) Other reading programs are just as effective but less expensive than the Verbal Advantage program.

d) Teaching students history and science is more important than teaching them reading skills.

Answer: (b)

The argument boils down to the following, including the unstated assumption provided by (b):
Premise: Students get enough reading practice already.
Unstated assumption (b): The reading program provides only reading practice.
Conclusion: The reading program is unnecessary.
(a) is not a necessary assumption. The argument is not concerned with whether improved reading skills would help the students learn history and science. Rather, the argument involves whether the new program would help improve reading skills.
(c) is not a necessary assumption. The argument is that no additional reading practice is needed, regardless of which program provides that practice.
(d) is not a necessary assumption. The argument does not aim to compare the importance of one discipline over another.

Question : 6

"Cases of food-poisoning have been reported from village X. After a dinner party arranged for 100 people, 68 were admitted to the hospital, and 36 were reported to be out of danger. The food, which was cooked and stored in an open space for almost 12 hours, was served after reheating. Investigation is going on." A news report. Which of the following can be hypothesised from the above information?

a) Cases of food-poisoning need to be handled carefully.

b) Late-night dinner parties for a large number of people result in food-poisoning.

c) Stale food is likely to be the cause of food-poison ing.

d) Cases of food-poisoning are not reported in urban dinner parties.

Answer: (c)

It is mentioned that food was stored in open for almost twelve hours hence stale food could have been the reason behind the disaster.

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