UGC NET Questions (Paper – 1)

A universal negative proposition has the standard form “No S are P”. It asserts that there is no overlap between the subject class and the predicate class. In traditional terminology this is an E-type proposition, combining universal quantity with negative quality. Thus the complete denial described in the stem is characteristic of a universal negative proposition.

Option A:
Option A, particular affirmative, states that some S are P and thus allows at least one member of the subject class to belong to the predicate class. This is incompatible with the idea that no members belong. Therefore it cannot be correct.

Option B:
Option B is correct because universal negative precisely captures a statement that excludes every subject from the predicate class. This form is central to syllogistic reasoning and to the square of opposition.

Option C:
Option C, universal affirmative, asserts that all S are P, which is the opposite in quality and cannot describe a total denial. It would contradict the kind of proposition mentioned in the question.

Option D:
Option D, particular negative, says that some S are not P, leaving open the possibility that other S might be P. It denies the predicate only of some members, not of all, and so does not fit the stem.

A universal affirmative proposition has the standard logical form “All S are P”. It combines universal quantity with affirmative quality by stating that every member of the subject class is included in the predicate class. In traditional logic, this is known as an A-type proposition. Therefore the proposition described in the stem is a universal affirmative.

Option A:
Option A is correct because universal affirmative captures both key features of the proposition: it talks about all members of the subject and it affirms a positive relation to the predicate. This terminology is standard in the study of categorical logic.

Option B:
Option B, universal negative, would state that no members of the subject class belong to the predicate class, as in “No S are P”. This directly contradicts the claim in the stem and so cannot be right.

Option C:
Option C, particular affirmative, asserts that at least one member of the subject class belongs to the predicate class, usually phrased as “Some S are P”. It does not talk about all members and therefore does not match the description.

Option D:
Option D, particular negative, states that some S are not P, which changes both the quantity and quality of the proposition compared to the universal affirmative. Hence it is not appropriate here.

A particular negative proposition has the form “Some S are not P”. It claims that there is at least one member of the subject class that falls outside the predicate class. In traditional logic this is known as an O-type proposition and combines particular quantity with negative quality. Thus the statement described in the stem is correctly called a particular negative.

Option A:
Option A, universal affirmative, asserts that all S are P and therefore rules out the possibility that any S are not P. It is incompatible with the existence of an exception and so does not fit the description.

Option B:
Option B, universal negative, denies that any S are P and thus claims universal exclusion, not the existence of at least one exception. It is different in both strength and form from the proposition in the stem.

Option C:
Option C, particular affirmative, states that some S are P, which is the exact opposite in quality of the particular negative. It cannot represent a claim about some S not belonging to P.

Option D:
Option D is correct because particular negative captures exactly the idea that there is at least one subject that does not have the predicate. This form is used to express limited but important exceptions.

Mood is determined by listing the categorical types of the major premise, minor premise and conclusion in order, using the letters A, E, I and O. For example, a syllogism with all three statements universal affirmative is said to have mood AAA. Mood, together with figure, fully specifies the syllogism's form. Hence the pattern of types described in the stem is called the mood of the syllogism.

Option A:
Option A is correct because mood captures exactly which kinds of categorical propositions are used and in what order. This information is crucial for checking validity against standard lists of valid moods in each figure.

Option B:
Option B, figure, as noted, is determined by the arrangement of the middle term in the premises, not by the types of propositions. While both mood and figure describe form, they refer to different aspects.

Option C:
Option C, schema, is sometimes used more broadly for generic argument patterns, but in traditional syllogistic logic, the specific term for the series of A, E, I, O labels is mood, not schema.

Option D:
Option D, order, is too vague and could refer to many sequences; it is not the standard technical label used in syllogistic theory.

Contraries are propositions that cannot both be true at the same time but can both be false. On the square of opposition, the universal affirmative 'All S are P' and the universal negative 'No S are P' have this relation. There are circumstances where neither statement holds, making both false. Thus the relationship described in the stem is that of contraries.

Option A:
Option A, contradictories, are pairs of propositions that cannot both be true and cannot both be false; exactly one must be true. This relation holds between A and O or E and I, not between A and E. Therefore contradictories is not correct here.

Option B:
Option B, subcontraries, are propositions that cannot both be false but can both be true, a relation found between I and O propositions. Universal statements do not stand in this relation, so subcontraries cannot be the right answer.

Option C:
Option C, subalterns, refers to pairs where the truth of a universal implies the truth of its corresponding particular, such as A implying I. This is a different relation from the one asked about in the question.

Option D:
Option D is correct because contraries specifically describe the relation between universal affirmative and universal negative propositions on the square of opposition, matching the description in the stem.

In the classical square of opposition, A (universal affirmative: “All S are P”) and O (particular negative: “Some S are not P”) are contradictories. This means they cannot both be true and cannot both be false; exactly one of them must be true at any time. Their truth values always oppose each other. This sharp opposition is what defines the contradictory relation.

Option A:
Option A, A and E, are contraries; they cannot both be true, but they can both be false if, for example, some S are P and some are not.

Option B:
Option B, A and I, stand in a relation of subalternation, where truth can flow from universal to particular, but they are not contradictories.

Option C:
Option C correctly selects A and O as contradictories, and similarly E and I form another contradictory pair in the square.

Option D:
Option D, I and O, are subcontraries; they cannot both be false, but they can both be true, so they are not contradictories.

A particular negative proposition is of the form “Some S are not P”. It denies the predicate for at least one member of the subject class. In the square of opposition, it is classified as an O-type proposition. Therefore the description in the stem corresponds to a particular negative.

Option A:
Option A, universal affirmative, asserts that all members of a class possess a certain property, as in “All S are P”. It does not involve denying something of some members. Hence it cannot be the correct answer.

Option B:
Option B, universal negative, denies the predicate for every member of the subject class, as in “No S are P”. This is too strong compared with the phrase “some members” in the stem. Thus universal negative is not suitable here.

Option C:
Option C correctly names particular negative as the proposition that denies something about some members. It matches both the quantity and the negative quality of the statement described. Therefore this option is correct.

Option D:
Option D, particular affirmative, affirms something of some members, as in “Some S are P”. It lacks the negative component required by the question. Hence particular affirmative is not the right choice.

From the statement “All researchers are readers,” we know that every researcher belongs to the larger class of readers. Assuming the class of researchers is non-empty (as in classical categorical logic), this implies that at least one reader is also a researcher, so it is safe to say some readers are researchers. The information about some readers being teachers does not change this basic inclusion.

Option A:
Option A stays within the clear consequence of putting all researchers inside the set of readers: if there are any researchers, then some readers are researchers.

Option B:
Option B would require that some of the readers who are teachers are also researchers, which is not given by the premises and may or may not be true.

Option C:
Option C overstates the relationship by claiming that all researchers are teachers, which is nowhere implied.

Option D:
Option D introduces a particular negative about researchers and teachers without support in the premises, so it goes beyond the logical information available.

In traditional logic, a universal affirmative proposition has the form “All S are P”. It makes a positive claim about every member of the subject class. Such propositions are symbolised as A-type in the square of opposition. Therefore the proposition described in the stem is a universal affirmative.

Option A:
Option A, particular affirmative, asserts something about some members of a class, as in “Some S are P”. It does not cover all members and so cannot match the description in the question.

Option B:
Option B correctly names universal affirmative as the proposition that affirms a predicate of every member of the subject class. This aligns perfectly with the phrase “all members of a class”. Hence it is the correct answer.

Option C:
Option C, particular negative, denies a predicate about some members, as in “Some S are not P”. It changes both the quantity and quality from what the stem states. Thus particular negative is not appropriate.

Option D:
Option D, universal negative, denies something of all members, as in “No S are P”. While universal in scope, it is not affirmative in quality. Therefore universal negative does not fit the description.

A particular affirmative proposition is expressed in the form “Some S are P”. It makes an existential claim that there exists at least one member of the subject class that belongs to the predicate class. In traditional logic it is labelled I-type, reflecting its particular quantity and affirmative quality. Therefore the statement described in the stem is a particular affirmative proposition.

Option A:
Option A, universal affirmative, asserts that all members of the subject class are included in the predicate class. This is far stronger than the minimal claim that at least one such member exists, so it does not match the description.

Option B:
Option B, universal negative, denies that any S are P and thus contradicts the assertion that some S are P. It clearly cannot be the correct classification.

Option C:
Option C is correct because particular affirmative precisely relates to propositions that affirm the predicate of at least one subject. This form plays an important role in discussions of existential import and the square of opposition.

Option D:
Option D, particular negative, states that some S are not P, which is negative in quality and therefore different from the affirmative assertion in the stem.

A universal negative proposition denies that any member of the subject class belongs to the predicate class. Its standard form is "No S are P", and in the traditional scheme it is labelled as an E-type proposition. This combination of universal scope and negative quality fits the description in the stem. Hence it is called a universal negative proposition.

Option A:
Option A, particular negative, is limited in scope to some members of the subject class, as in "Some S are not P". It does not deny membership for all subjects and so cannot represent the form given in the question.

Option B:
Option B is correct because universal negative precisely designates a statement that denies the predicate of every member of the subject class. It is a key category in the square of opposition and contrasts with universal affirmative statements. This alignment makes universal negative the appropriate choice.

Option C:
Option C, universal affirmative, asserts that all members of the subject class belong to the predicate class. It has the opposite quality to the negative proposition described and therefore does not match.

Option D:
Option D, particular affirmative, affirms the predicate for at least one member of the subject class. It is both narrower in scope and positive in quality, which differs from the universal denial described in the stem.

This option is correct because a syllogism is a deductive argument formed from two premises and a conclusion. Each statement in a syllogism is usually a categorical proposition involving terms and quantifiers. The conclusion follows logically from the premises if the syllogism is valid. Therefore, such a structured argument is called a syllogism.

Option A:
A proposition is an individual declarative statement that is either true or false. While syllogisms are made up of propositions, the term proposition does not describe the whole argument structure. Thus, this option is too narrow and not correct.

Option B:
A term in logic is a word or phrase that stands for an object or concept, such as the subject or predicate in a proposition. Terms are components inside propositions but not full arguments. Therefore, term is not the right label for the argument described.

Option C:
A quantifier indicates how many objects of a certain kind are being referred to, such as "all" or "some." Although quantifiers appear in categorical propositions, they are not the name of the entire argument form. Hence, quantifier is not the correct answer.

Option D:
A syllogism specifically refers to a deductive argument with exactly two premises and one conclusion, often involving categorical statements. It captures both the structure and the logical relationship described in the question. Therefore, this term correctly names the type of argument mentioned.

All statements A to E correctly describe the four standard forms of categorical propositions and their exam relevance. A and B give the universal forms, C and D the particular forms, and E notes their importance for syllogistic and immediate inference questions. Since none is false, the correct combination includes all of them.

Option A:
Option A is incomplete because it omits E (the exam-use point), even though A–D are true.

Option B:
Option B is incorrect because it leaves out D (the O-form), so it does not cover the full A, E, I, O scheme.

Option C:
Option C is incorrect because it excludes A (the universal affirmative), which is central to the classification.

Option D:
Option D correctly includes every true statement, giving a full description of A, E, I, O forms and their uses.

From the first statement, “All books are papers,” we know that the entire set of books lies inside the set of papers. This implies that every book is also a paper, so at least some papers (those which are books) must exist. Therefore, the conclusion that some papers are books is necessarily true. The second statement about magazines does not contradict this and is not needed to derive that conclusion.

Option A:
Option A, “Some books are magazines,” cannot be guaranteed because we are not told that the sets of books and magazines overlap. There may or may not be such an overlap, so this conclusion is only possible, not certain.

Option B:
Option B follows directly from the universal statement “All books are papers.” If all books are contained in the set of papers, then at least one paper (a book) must exist, making “Some papers are books” logically necessary.

Option C:
Option C, “All magazines are books,” reverses and overextends the information. We only know that some papers are magazines, not that magazines are confined to the set of books.

Option D:
Option D, “No paper is a book,” is the exact negation of the implication of the first statement and thus directly contradicts “All books are papers.”

A particular affirmative proposition has the form "Some S are P". It states that there exists at least one subject that is also a member of the predicate class. In the traditional classification, it is known as an I-type proposition and carries existential import. Thus the description in the stem corresponds to a particular affirmative proposition.

Option A:
Option A, universal negative, denies the predicate of all members of the subject class, as in "No S are P". It expresses a universal denial rather than an existential affirmation. Therefore universal negative does not fit the description.

Option B:
Option B, particular negative, asserts that some members of the subject class are not members of the predicate class, as in "Some S are not P". Although particular, it is negative in quality and thus differs from the affirmative character mentioned in the stem.

Option C:
Option C is correct because particular affirmative refers to a proposition that affirms membership for at least one subject in the predicate class. This limited but positive claim matches the phrase "at least one member" in the question.

Option D:
Option D, universal affirmative, goes beyond some members and asserts that all members of the subject class belong to the predicate class. Its universal scope makes it different from the partial claim described.