UGC NET Questions (Paper – 1)

A is correct as a valid categorical syllogism uses exactly three distinct terms: major, minor and middle. B is true because the middle term must be distributed at least once to connect the extremes properly. C is correct since two negative premises provide no positive linkage, and D is true because two particular premises cannot logically support a universal conclusion. E is false because these are necessary but not sufficient conditions; a syllogism can meet them yet still be invalid for other reasons. Hence A, B, C and D only are correct.

Option A:
Option A omits D and thus fails to mention the important constraint on drawing universal conclusions from particular premises. While A, B and C are true, the omission of D makes the set incomplete.

Option B:
Option B ignores A, so it does not mention the three-term requirement; although B, C and D are true, this omission leaves out a central structural rule for syllogisms.

Option C:
Option C drops B and therefore fails to highlight the distribution requirement of the middle term, which is crucial for testing validity. Even with A, C and D present, missing B leaves the account incomplete.

Option D:
Option D is correct because it collects all the true structural rules while excluding E, which overstates their sufficiency. This matches how NET questions test necessary conditions for syllogistic validity.

Statements A, B, C, E and F are correct, while D is false. A states the three-term rule, and B correctly links negative premises to a negative conclusion. C expresses the rule that two particular premises yield no valid conclusion, and E notes the prohibition on illicitly distributing a term in the conclusion. Venn diagrams are indeed useful in UGC NET to visualise these constraints. D is wrong because many valid moods, such as Barbara, have two universal premises and a valid universal conclusion. Therefore A, B, C, E and F only is the correct combination.

Option A:
Option A is incomplete because it omits E and F, ignoring both the rule about illicit distribution and the exam technique for testing syllogisms. While A, B and C are correct, leaving out these two elements makes the account less complete. Hence A, B and C only cannot be accepted.

Option B:
Option B is also incomplete, since it includes E but omits F, failing to mention the practical Venn diagram method. Although A, B, C and E are true, they do not fully address how validity is tested in UGC NET contexts. Therefore A, B, C and E only is not the best answer.

Option C:
Option C is wrong because it omits A and includes only B, C, E and F. Without A, the crucial three-term rule is not mentioned, which is essential for understanding many fallacies. This omission prevents the option from reflecting all the true statements given.

Option D:
Option D is correct because it gathers A, B, C, E and F, giving a comprehensive summary of structural rules and testing methods, while excluding D, which incorrectly claims that universal premises cannot yield a valid conclusion. This option therefore matches established syllogistic theory.

Statements A, C, D and F are correct, whereas B and E are incorrect. A standard categorical syllogism has three propositions involving exactly three distinct terms, and validity requires that the middle term be distributed at least once. Two negative premises cannot yield a valid conclusion because they fail to establish a positive link between the major and minor terms. Venn diagrams are widely used in reasoning questions to test such syllogisms visually. By contrast, B wrongly claims four terms, and E misstates the relationship between universal premises and the quantity of the conclusion. Therefore A, C, D and F only is the correct combination.

Option A:
Option A is incorrect because it omits F, leaving out the important fact that Venn diagrams are a recognised tool for checking validity. While A, C and D are true, the absence of F means this option does not contain all correct statements. Hence A, C and D only cannot be accepted.

Option B:
Option B is wrong since it includes E as though it were correct. E claims that universal premises always force a particular conclusion, but some valid moods, like Barbara, produce universal conclusions. Including this false rule makes the combination logically unsound.

Option C:
Option C is correct because it groups A, C, D and F, capturing the structural features and testing method of categorical syllogisms. It excludes B, which inflates the number of terms, and E, which oversimplifies the quality-quantity relations. Thus this option matches the genuine rules of classical syllogistic logic.

Option D:
Option D is incorrect because it accepts E as well as C, D and F while omitting A. Leaving out A ignores the three-proposition nature of syllogisms, and including E introduces a faulty generalisation about conclusions. Therefore C, D, E and F only cannot be the right answer.

Statements A, B and C express standard rules from traditional syllogistic logic. A is correct because a categorical syllogism uses three and only three terms, each appearing in specific roles. B is correct since failure to distribute the middle term at least once leads to the fallacy of undistributed middle. C is also true because with two negative premises there is no logical basis to relate the subject and predicate terms, so no conclusion follows. Statement D is false because valid syllogisms cannot have both premises negative and the conclusion negative simultaneously, so only A, B and C form the correct set.

Option A:
Option A is incomplete as it includes only A and B but omits C, which is an important rule prohibiting valid conclusions from two negative premises. Without C, the characterisation of valid and invalid syllogisms is not complete. This makes the option unsuitable for the correct answer.

Option B:
Option B is correct because it brings together all the true statements about term count, middle-term distribution and the restriction on negative premises. It also implicitly excludes the incorrect idea in D that a valid syllogism may have all three statements negative. This matches the logical rules examined in NET questions.

Option C:
Option C is incorrect because it includes D, which falsely allows a configuration with both negative premises and a negative conclusion, while omitting B. Losing the distribution condition on the middle term and accepting a wrong rule about negativity makes the option invalid.

Option D:
Option D is wrong because it pairs B with D, treating the clearly false D as if it were correct and leaving out A and C. The combination therefore mixes truth with error and fails to capture the overall structure of valid categorical syllogisms.