UGC NET Questions (Paper – 1)

The post hoc fallacy is summarised by the phrase “after this, therefore because of this”. It mistakenly infers a causal relation merely from temporal succession. Just because one event comes after another does not mean the first caused the second. Hence the fallacy described in the stem is correctly called post hoc.

Option A:
Option A, straw man, involves misrepresenting an opponent’s position to make it easier to attack. It does not concern temporal order or causal assumptions. Therefore straw man is not the fallacy being described.

Option B:
Option B, ad hominem, attacks the character of a person instead of addressing the argument. This is a different kind of informal fallacy unrelated to event sequence. Thus ad hominem is not appropriate here.

Option C:
Option C correctly names the post hoc fallacy, which draws a causal conclusion solely from the fact that one event follows another. It warns against confusing correlation with causation. Therefore post hoc is the best answer.

Option D:
Option D, false analogy, bases a conclusion on an inappropriate or weak comparison between cases. While it is an informal fallacy, it does not rely on temporal succession. Hence false analogy cannot be the correct choice.

The ad populum fallacy appeals to the popularity of a belief as though widespread acceptance were decisive evidence of its truth. It confuses social agreement with logical justification. Truth, however, depends on facts and reasoning, not merely on the number of believers. Thus the fallacy described in the stem is ad populum.

Option A:
Option A, slippery slope, warns without sufficient support that a small step will lead to disastrous outcomes. It has nothing to do with counting believers. So slippery slope is not the correct answer.

Option B:
Option B, false dilemma, restricts options to two extremes when more alternatives exist. This misrepresentative framing differs from appealing to popularity. Hence false dilemma does not fit the question.

Option C:
Option C, equivocation, relies on shifting the meaning of a key term within an argument. It is a linguistic fallacy, not one based on majority opinion. Therefore equivocation is not appropriate here.

Option D:
Option D correctly identifies ad populum as arguing that a claim is true because many people accept it. Such appeals to popularity are logically weak and may hide lack of evidence. Thus ad populum is the best choice.

A straw man fallacy occurs when someone distorts an opponent’s position into a weaker or exaggerated version and attacks that instead of the original view. In the given statement, the speaker changes “spend more on education” into “ignore all other public needs,” which the opponent never claimed. The distorted position is easier to criticise and therefore misrepresents the actual proposal. This is a classic case of setting up and knocking down a straw man.

Option A:
Option A, ad hominem, would attack the person’s character rather than their argument, which is not the focus here.

Option B:
Option B properly describes the error of turning a moderate proposal into an extreme one for the sake of refutation. The original claim is unfairly exaggerated.

Option C:
Option C, appeal to authority, involves citing an expert or famous person as evidence without examining the reasoning, which is not happening in this argument.

Option D:
Option D, false dilemma, would limit the choices to just two extreme options, which is not the structure of this misrepresentation.

The ad hominem fallacy occurs when someone attacks an opponent’s character, motives or other personal traits rather than engaging with the argument. Such attacks are irrelevant to the truth of the claim being discussed. This shifts focus away from reasons and evidence. Therefore the fallacy described in the stem is ad hominem.

Option A:
Option A, straw man, misrepresents an opponent’s position and then attacks the distorted version. It is a fallacy of mischaracterisation, not of personal attack. Hence straw man is not the correct answer here.

Option B:
Option B, slippery slope, suggests without adequate support that a relatively small step will inevitably lead to a chain of disastrous events. It concerns causal exaggeration, not attacks on persons. Thus slippery slope does not fit the description.

Option C:
Option C, false cause, wrongly assumes a causal connection between events without proper justification. It deals with causation rather than the personal qualities of a speaker. Therefore false cause is not the fallacy indicated in the question.

Option D:
Option D correctly names ad hominem as the practice of criticising the person instead of the argument. Logical assessment requires focusing on reasons and evidence, not on irrelevant personal attacks. Hence ad hominem is the best choice.

Statements D and E are wrong, whereas A, B, C and F are correct descriptions of informal fallacies and critical thinking. Hasty generalisation actually involves insufficient or biased samples, not large and representative ones, so D reverses the definition. Slippery slope arguments can be fallacious when the alleged chain of events is not well supported, so E is also false. A, B and C correctly identify ad hominem, straw man and false cause, and F rightly points out the value of spotting fallacies. Therefore the wrong statements are exactly D and E.

Option A:
Option A is incorrect because it selects only D as wrong and ignores E, which also mischaracterises slippery slope arguments. By treating only one of the two erroneous statements as wrong, it fails to capture the full set of incorrect claims. Hence D only cannot be accepted.

Option B:
Option B is also incomplete since it marks only E as wrong and overlooks the error in D about hasty generalisation. Both D and E distort standard definitions, so recognising only one of them gives an incomplete diagnosis. For that reason E only is not a satisfactory answer.

Option C:
Option C is correct because it groups D and E, the two statements that clearly conflict with the usual treatment of these fallacies. It leaves A, B, C and F intact, all of which match textbook descriptions of informal fallacies and their role in reasoning. This option therefore identifies the complete set of wrong statements.

Option D:
Option D is wrong because it adds C to D and E as though C were also false. In fact, C correctly describes a common form of false cause reasoning where correlation is mistaken for causation. Including C among wrong statements therefore makes the option logically inconsistent.

Logical reasoning requires distinguishing mere sequence from genuine causal connection. Just because the street was wet after the parade does not mean the parade caused the wetness; it could have rained or a water tanker might have washed the road. The argument commits a post hoc type error by inferring causation solely from “after.” The appropriate criticism is that it overlooks alternative explanations and treats temporal order as sufficient evidence of cause.

Option A:
Option A assumes that any earlier event causes any later event, which is an obvious exaggeration and not a careful logical assessment.

Option B:
Option B correctly identifies the confusion between “after” and “because of,” and points out the neglect of other plausible causes for the wet street.

Option C:
Option C wrongly claims that the argument is valid because wet streets always follow parades, a premise that is neither stated nor universally true.

Option D:
Option D mistakes factual reference to events for soundness; soundness also requires a valid inference from true premises, which is missing here.

The fallacy of division arises when an arguer illegitimately infers that because a group or whole has a certain property, each individual member or component must also have that property. This overlooks the possibility that properties of the whole need not be shared by its parts. Logical evaluation requires examining whether the transfer of attributes is warranted in each case. Therefore the mistaken inference described in the stem is called the fallacy of division.

Option A:
Option A, composition, is the reverse error of assuming that what is true of parts must be true of the whole. While related, it moves in the opposite direction and so does not match the stem.

Option B:
Option B is correct because division specifically covers the inference from whole to part that fails to distinguish collective and distributive properties. For example, from “the team is famous” it does not follow that every player is famous.

Option C:
Option C, false cause, involves incorrectly identifying a causal relationship between events, which is unrelated to the whole–part misreasoning noted here.

Option D:
Option D, equivocation, rests on the ambiguous use of a term in different senses within an argument, not on illegitimate distribution of a property from whole to parts.

The post hoc fallacy occurs when someone assumes that because one event happens after another, the first event must have caused the second. Here, improvement in performance follows the introduction of a new method, and causation is asserted purely based on this sequence. The reasoning ignores other possible factors such as increased practice, changes in assessment or better resources. This unwarranted leap from temporal order to causal claim is exactly what the Latin label “post hoc ergo propter hoc” names.

Option A:
Option A, slippery slope, suggests a chain reaction of events leading to extreme consequences, which is not the pattern here.

Option B:
Option B identifies the specific error of inferring causation only from the fact that one event came after another, matching the structure of the argument given.

Option C:
Option C, hasty generalisation, involves drawing a broad conclusion from too few or unrepresentative cases, which is related but distinct from post hoc reasoning.

Option D:
Option D, false analogy, rests on inappropriate comparison between two cases, which is not central to this example.

Statements A, B, C, D and F correctly describe several informal fallacies and their importance for critical thinking, whereas E is false. These errors arise from ambiguous language or unwarranted moves between parts and wholes, not from the pure symbolic form of arguments. Because they are rooted in content and expression, they are categorised as informal, and identifying them is crucial in analysing exam passages. E incorrectly labels them as formal fallacies. Thus A, B, C, D and F only is the correct combination.

Option A:
Option A is incomplete since it omits F, ignoring the explicit statement about their use in evaluating UGC NET passages. Without F, the option lacks the exam connection. Therefore A, B, C and D only is not entirely adequate.

Option B:
Option B is wrong because it adds E, treating these language-based fallacies as formal, which conflicts with the usual classification in logic textbooks. Formal fallacies arise from invalid structure, not from ambiguous wording or content. Including E therefore makes the option incorrect.

Option C:
Option C is correct because it collects the accurate definitions and classifications of these fallacies together with their role in critical reasoning tasks. It explicitly rejects the misclassification in E. This matches how these topics are presented in Paper 1 preparation.

Option D:
Option D is incorrect since it includes E and omits A, losing the definition of equivocation while endorsing the wrong type-label. This combination does not align with the standard logical treatment of fallacies.

An appeal to authority fallacy occurs when a claim is accepted as true simply because an authority or famous person asserts it, without examining the actual evidence or expertise. In this case, a famous actor is cited to guarantee the scientific soundness of a diet. Actors are not necessarily experts in nutrition or medical science, so their endorsement does not constitute strong scientific evidence. The argument relies on status rather than substantive reasoning.

Option A:
Option A, straw man, would involve misrepresenting another person’s argument, which is not happening here.

Option B:
Option B correctly identifies the undue reliance on a celebrity’s opinion as the central flaw, instead of referring to clinical trials or expert studies.

Option C:
Option C, red herring, would distract from the issue by introducing an irrelevant point, whereas the problem here is the kind of evidence used.

Option D:
Option D, false cause, involves wrongly attributing causation, which is not the main issue in this example.

An ad hominem fallacy attacks the person making the argument instead of addressing the argument’s content. In the statement, the speaker dismisses the climate change argument based solely on the speaker’s professional background, rather than examining evidence or logic. This makes the personal attribute irrelevant to the truth of the claim and shifts attention away from the actual reasoning.

Option A:
Option A, straw man, involves misrepresenting someone’s argument and attacking the distorted version, which is not happening here.

Option B:
Option B correctly identifies the focus on the person rather than the argument as the key flaw. The criticism targets who is speaking, not what is being said.

Option C:
Option C, appeal to pity, tries to win support by arousing sympathy rather than offering reasons, which is absent here.

Option D:
Option D, appeal to ignorance, argues that a proposition is true simply because it has not been proven false, which is a different kind of mistake.

The straw man fallacy involves distorting or oversimplifying an opponent’s position. The critic then attacks this weaker version instead of the original claim. This tactic gives the illusion of refutation without genuinely engaging the argument. Therefore the fallacy described is called straw man.

Option A:
Option A, red herring, diverts attention to an unrelated issue, distracting from the main argument. It does not necessarily involve misrepresenting the opponent’s view. Hence red herring is not the correct label here.

Option B:
Option B, false cause, assumes a causal connection without adequate evidence. It concerns causal reasoning rather than misrepresentation of positions. Thus false cause does not match the pattern in the stem.

Option C:
Option C accurately names the straw man fallacy as the practice of constructing an easier target by altering the original claim. This weaker version is then attacked as though it were the real argument. Therefore straw man is the best answer.

Option D:
Option D, ad populum, appeals to popular opinion as evidence for a claim’s truth. It relies on numbers rather than accurate representation of views. Consequently ad populum is not appropriate here.

Statements A, B, C and E are correct. D is false because ad hominem, straw man and false dilemma are informal fallacies (content-based), not formal fallacies determined purely by symbolic form. F is false because emotional language alone does not make an argument ad hominem; the fallacy occurs when a personal attack replaces engagement with reasons. Therefore the correct set of true statements is A, B, C and E only.

Option A:
Option A is incorrect because it omits E, which is also true and important for exam evaluation. So A, B and C only is incomplete.

Option B:
Option B is incorrect because it includes D, which wrongly classifies these as formal fallacies.

Option C:
Option C is incorrect because it includes F, which falsely treats emotional language as automatically ad hominem.

Option D:
Option D is correct because it includes all true statements (A, B, C, E) and excludes the false ones (D, F).