UGC NET Questions (Paper – 1)

Statements A, B, C and E correctly describe the representational power of Venn diagrams. They visually show relationships among sets, capture intersections as overlapping regions, show disjointness through non-overlapping circles and can handle reasoning situations with three classes. Statement D is false because Venn diagrams are actually a standard tool for checking the validity of categorical syllogisms by mapping premises and examining the conclusion. Therefore the combination that lists A, B, C and E only is correct.

Option A:
Option A is incomplete because it omits E, thereby ignoring the useful fact that Venn diagrams can be extended to three sets and are often used in exam problems involving three categories. Without E, the picture of their application is narrower.

Option B:
Option B is correct since it collects all true statements and excludes D, which wrongly denies the use of Venn diagrams in syllogistic reasoning. It captures both the set-theoretic and exam-oriented aspects of Venn diagrams.

Option C:
Option C is wrong as it leaves out A, so it does not explicitly say that Venn diagrams represent relationships among sets or classes, a fundamental point about their purpose. Though B, C and E are true, the combination is incomplete.

Option D:
Option D is incorrect because it omits B, which explains how common elements are shown, and thus fails to mention how intersections appear visually. It also does not rectify D, the false claim about their use in testing syllogisms.

The first premise places all athletes inside the set of disciplined people, guaranteeing an overlap between those categories as long as athletes exist. Therefore, some disciplined people must be athletes. The second premise concerns a subset of disciplined people who lack punctuality but does not directly specify whether that subset includes athletes. Thus, we cannot infer anything specific about athletes’ punctuality, but we can affirm that some disciplined persons are athletes.

Option A:
Option A would require that some of the non-punctual disciplined people are athletes, which the premises do not guarantee.

Option B:
Option B goes further and claims that no athlete is punctual, which is unsupported.

Option C:
Option C makes the weaker and logically certain claim that at least one disciplined person is an athlete, which follows from “all athletes are disciplined” under the assumption that athletes exist.

Option D:
Option D introduces a statement about punctual people that is not addressed by the premises and so cannot be logically concluded.