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.

Statements A, C and D correctly explain basic Venn diagram ideas. A is true because Venn diagrams use overlapping closed curves to depict set relationships. C is correct as union collects elements from either set or both. D is also correct since the intersection consists of elements common to both sets. B is false because the common region represents intersection, not union, and E is false as the complement contains elements not in A. Thus A, C and D only are correct.

Option A:
Option A is incomplete since it omits D, leaving out the explicit description of intersection, which is fundamental to reading Venn diagrams. It therefore does not capture all the correct statements.

Option B:
Option B is incorrect because it includes only C and D and omits A, failing to mention what a Venn diagram is, and it also leaves out one of the true descriptive statements.

Option C:
Option C is correct as it gathers all the accurate statements about the depiction of sets, their union and intersection, while excluding B and E, which misidentify the regions and the meaning of complements.

Option D:
Option D is wrong because it includes E, which reverses the meaning of complement by saying it contains all elements of A, and therefore mixes a false statement with true ones.