UGC NET Questions (Paper – 1)

Statements A, B, C and E correctly describe different forms of hypothetical syllogisms, while D is false. A pure hypothetical syllogism chains conditionals, while mixed forms involve a conditional plus a categorical premise, as with modus ponens and modus tollens. Not every pattern with two conditionals and a categorical conclusion is valid; the form matters. UGC NET reasoning often includes such patterns, making E true. Thus A, B, C, E only is the correct set.

Option A:
Option A is incomplete because it omits E, ignoring the explicit exam focus of the question. A, B, C only therefore does not fully address the stem.

Option B:
Option B is wrong since it leaves out C, failing to mention that modus ponens and modus tollens are canonical examples of mixed hypothetical forms. A, B, E only thus under-describes the topic.

Option C:
Option C is correct as it gathers the main patterns and the exam orientation, while rightly excluding D, which overgeneralises about any argument combining two conditionals and one categorical conclusion.

Option D:
Option D is incorrect because it includes D, thereby endorsing the claim that any such structure is valid, which is demonstrably untrue. B, C, D, E only therefore mixes in a clear error.

Statements A, B, D and E are correct, while C and F are false. Analogical reasoning does infer further properties from recognised similarities, and the relevance of those similarities is crucial for strength. Differences between cases can weaken an analogy, and UGC NET tests both verbal and non-verbal analogies. C is wrong because a single superficial similarity rarely makes an analogy strong, and F is wrong because in strong analogies, similarities are more central than differences. Hence A, B, D and E only is the correct combination.

Option A:
Option A is incomplete because it omits E, ignoring the fact that analogies are tested in both verbal and non-verbal formats. Although A, B and D are true, leaving out E means an important exam-oriented point is missing. Therefore this option does not capture all correct statements.

Option B:
Option B is incorrect since it drops A and includes only B, D and E. Without A, the general idea of analogical reasoning as inference from similarity is not explicitly stated. This omission makes the description of analogy conceptually thinner than the full list of correct statements.

Option C:
Option C is correct because it lists exactly A, B, D and E, which jointly define analogical reasoning, its evaluation and its appearance in the UGC NET syllabus. It excludes C, which exaggerates the sufficiency of any similarity, and F, which misdescribes the role of differences. Thus Option C matches the set of correct statements.

Option D:
Option D is wrong because it adds C, a false statement about superficial similarity always being enough, to an otherwise correct group. Including C promotes a misunderstanding about how analogies should be evaluated. As a result, A, B, C, D and E only cannot be the correct answer.

Statements A, B, C and D accurately describe reductio ad absurdum and its relation to prasaṅga, while E is false. In reductio, we assume the opposite of what we want to prove and derive a contradiction or absurd consequence, forcing us to reject that assumption and accept its negation. Buddhist prasaṅga uses a similar technique against an opponent’s thesis. However, merely having contradictory premises does not automatically constitute a proper reductio; the contradiction must be shown to arise from the specific assumption under test. Thus E is the only incorrect statement.

Option A:
Option A is correct because it singles out E as the sole wrong statement and preserves the correct description of reductio and its dialectical use in A, B, C and D. This option mirrors the structured method taught for proof by contradiction.

Option B:
Option B is incorrect since it also marks C as wrong even though C correctly states what is concluded when a contradiction arises from the assumed negation. C and E only therefore misclassifies a crucial step in reductio as incorrect.

Option C:
Option C is wrong because it treats D as wrong along with E, despite D accurately noting the use of prasaṅga in Buddhist debates. D and E only thus fails to respect the historical connection.

Option D:
Option D is also incorrect since it includes B among the wrong statements, even though B correctly explains that we derive a contradiction or unacceptable consequence from the assumption. B, D and E only therefore cannot be accepted as the correct answer.

Statements A, B, C, D and E are all correct descriptions of necessary and sufficient conditions, whereas F is false. Sufficiency requires that p’s truth guarantees q, and necessity means q is required for p. When a condition is both necessary and sufficient, the two statements are equivalent, and such cases do exist in logic and mathematics. Misunderstanding these notions can easily produce fallacies in exam questions, so E is also correct, while F contradicts the definition of a necessary condition by suggesting an impossible relation.

Option A:
Option A is incomplete because it omits E, failing to include the practically important warning about exam inferences. While A, B, C and D correctly outline theoretical relations, they do not address how confusion between them leads to mistakes in reasoning. Therefore A, B, C and D only does not contain all the correct statements provided.

Option B:
Option B is correct since it gathers all five true statements A, B, C, D and E and excludes F, which misrepresents necessity. It integrates the conceptual link between necessity, sufficiency and equivalence with the practical impact on inferential errors. Thus it accurately reflects the understanding expected in UGC NET Paper 1.

Option C:
Option C is incorrect because it leaves out D, which notes that a condition may indeed be both necessary and sufficient in certain contexts. Without D, the answer ignores an important nuance about how conditions can combine. The omission means this option does not fully represent the set of correct statements.

Option D:
Option D is wrong because it omits A, the basic link between sufficiency and conditional implication, and includes only B, C, D and E. Without A, the account of sufficient conditions is incomplete, even though the other four statements are true. Hence B, C, D and E only cannot be the right combination.

Statements A, B, C and E are correct, while D and F are false. Causal reasoning does seek contributing factors, post hoc identifies a common fallacy based on mere sequence, and controlled comparison helps isolate causal variables. Exam questions often ask which explanation best accounts for observed facts, which is captured in E. D is wrong because temporal order alone does not prove causation, and F is wrong because correlation does not automatically establish a causal link. Thus A, B, C and E only is the correct combination.

Option A:
Option A is incomplete because it omits E, overlooking the way UGC NET uses cause and effect items to test evaluative skills. Although A, B and C are conceptually sound, they do not reflect this exam context. Hence A, B and C only cannot be chosen.

Option B:
Option B is incorrect because it drops A, failing to state what causal reasoning tries to do in general. Having only B, C and E leaves out the overall idea of causation itself. This omission makes the option conceptually weaker than the full set of correct statements.

Option C:
Option C is correct since it unites the description of causal inquiry, a classic fallacy, a methodological tool and the exam style of questioning. By excluding D and F, it also protects against common confusions between sequence, correlation and causation. Therefore this option fits both theory and practice.

Option D:
Option D is wrong because it includes D, which absurdly claims that temporal succession always suffices for causation, and omits C’s point about controlled comparison. Accepting D leads to many false causal attributions. So A, B, D and E only is not a valid answer.

Statement C is wrong because in standard truth-functional logic the conditional “if p then q” is false precisely when p is true and q is false, not when p is false and q is true. Statements A and B correctly describe the conditions for truth of conjunction and inclusive disjunction, while D accurately explains the biconditional and E states the essential idea that compound truth values depend on component truth values. Hence, C alone is the incorrect statement, so the option that lists only C is correct.

Option A:
Option A is correct since it identifies C as the sole misstatement and implicitly accepts A, B, D and E as standard truth-table definitions. It preserves the conventional semantics of implication while rejecting the inverted condition given in C.

Option B:
Option B is incorrect because it also labels A as wrong, even though A correctly states that “p and q” is true only when both components are true. Treating A as incorrect contradicts the fundamental definition of conjunction.

Option C:
Option C is wrong because it adds D to the set of wrong statements, even though D accurately characterises “if and only if” as true when p and q share the same truth value. Including D among wrong statements undermines correct understanding of biconditional.

Option D:
Option D is also incorrect because by pairing B with C it misclassifies B, which correctly explains that inclusive “or” is false exactly when both disjuncts are false. This combination therefore rejects a correct connective rule.

All statements A to E are correct: conversion swaps subject and predicate (with limits), E and I are simply convertible (A and O are not), obversion changes quality and complements the predicate, and the A-form obverse given in D is equivalent. These tools help decide equivalence in exam questions.

Option A:
Option A is incomplete because it omits E, the explicit exam-use point.

Option B:
Option B is incomplete because it omits D, a key example showing obversion preserves equivalence for an A-proposition.

Option C:
Option C is correct because it includes all five true statements and matches the stem fully.

Option D:
Option D is incorrect because it omits A, the basic definition of conversion.