UGC NET Questions (Paper – 1)

Aristotle's model of communication focuses on the speaker delivering a speech to an audience in a one directional manner. The emphasis is on how the speaker organises the message to persuade listeners. There is little explicit attention to feedback from the audience. Therefore the process is best described as linear in nature.

Option A:
Linear communication involves a straight flow of messages from sender to receiver without a built in feedback loop. Aristotle's focus on rhetoric and persuasive speech matches this pattern. The model suits formal speeches where audience response is limited.

Option B:
Transactional models see communication as simultaneous mutual influence,which goes beyond Aristotle's one way emphasis. They highlight co creation of meaning rather than simple transmission. They therefore do not accurately describe Aristotle's basic view.

Option C:
Circular models such as Osgood Schramm represent repeated encoding and decoding cycles,where roles constantly shift. Aristotle did not depict this continuous loop in his simple diagram. Hence circular is not the best term here.

Option D:
Interactive models explicitly incorporate feedback as a separate stage,which is not highlighted in Aristotle's original formulation. They evolved later to address limitations of linear views. Thus interactive is not the correct choice.

Contradictory propositions are such that one must be true and the other must be false in every possible situation. On the square of opposition, A and O types and E and I types stand in this relation. The defining feature is that they cannot both be true and cannot both be false. Therefore the pair described in the stem are called contradictories.

Option A:
Option A is correct because contradictories exactly capture the mutual exclusivity and exhaustive character mentioned. If one member of a contradictory pair holds, the other must fail, and vice versa. This condition matches the description given in the statement.

Option B:
Option B, contraries, cannot both be true but can both be false, as with "All S are P" and "No S are P". They lack the requirement that one must be true when the other is false. Hence contraries are not the right relation here.

Option C:
Option C, subcontraries, cannot both be false but can both be true, as in "Some S are P" and "Some S are not P". This is the opposite pattern to that described in the question. Therefore subcontraries are not appropriate.

Option D:
Option D, subalterns, involve a relation of implication between universal and particular forms where truth flows downward. They do not exhibit the stringent mutual exclusivity of contradictories. Thus subalterns do not fit the stem.

Statements A, B, D and E are correct, whereas C is incorrect. A is true because honesty is a basic ethical principle in teaching. B is true since confidentiality protects student dignity and privacy. D is true as plagiarism violates norms of credit and originality. E is true because proper citation is central to ethical academic communication. C is false because humiliation damages self-esteem and does not constitute ethical discipline. Therefore, C only is the wrong statement.

Option A:
Option A marks both A and C as wrong, but A correctly asserts that information should be presented honestly. Calling A wrong contradicts the fundamental ethical expectation from teachers, so A and C only cannot be accepted.

Option B:
Option B correctly isolates C as the sole unethical statement. It recognises that humiliating students publicly is harmful, while all other statements express accepted ethical responsibilities in educational communication. Hence, C only is the correct answer.

Option C:
Option C labels C and D as wrong, but D accurately describes the negative impact of plagiarism. Misclassifying D as incorrect undermines the importance of academic integrity, so C and D only is invalid.

Option D:
Option D includes B, C and D as wrong, but both B and D articulate core ethical norms regarding confidentiality and plagiarism. Combining these true statements with C in a set of “wrong” statements makes B, C and D only logically inconsistent.

Each term is a 5-letter block; starting letters move by +2: A, C, E, G → next I. So the next block is IJKLM.

Option A:
Option A starts at H (+1 from G), not +2.

Option B:
Option B is correct because it starts at I (+2 from G) and continues consecutively.

Option C:
Option C starts at J (+3 from G), not +2.

Option D:
Option D repeats an earlier term and does not continue the slide.

A mediating variable, or mediator, accounts for the process by which an independent variable exerts its effect on a dependent variable. It stands in the causal chain between cause and outcome, translating the initial influence into the final effect. Identifying mediators helps researchers understand how and why a relationship occurs, not just whether it exists. Therefore, a variable that explains the mechanism of influence is correctly called a mediating variable.

Option A:
Control variables are held constant or statistically adjusted to prevent them from confounding the relationship between independent and dependent variables, but they do not represent the pathway of influence.

Option B:
Moderators change the strength or direction of the relationship but do not necessarily explain the mechanism through which the effect travels; they answer “when” or “for whom” rather than “how.”

Option C:
Mediating variables offer insight into intermediate steps, such as improved motivation mediating the effect of a teaching strategy on achievement. This explanatory role matches the stem and makes this option correct.

Option D:
Demographic variables describe characteristics like age or gender and may act as predictors, controls or moderators but do not inherently serve as mechanisms in a causal chain.

Mission estimates suggest that by 2030 the green hydrogen ecosystem could attract investments exceeding ₹8 lakh crore and create over six lakh jobs. By substituting green hydrogen for imported fossil-based feedstocks and fuels, it can lower the import bill and enhance energy security. It is also expected to avoid roughly 50 MMT of CO₂ emissions per year, thereby supporting India’s mitigation goals while enabling new green industries. (Press Information Bureau)

Option A:
This option is incorrect because official projections emphasise very substantial investments and emission reductions, not “minimal” impacts.

Option B:
This option correctly captures the multiple economic and environmental benefits that the mission is expected to deliver, connecting climate action with jobs and energy security.

Option C:
Although exports are an opportunity, the mission also targets domestic decarbonisation in sectors like fertilisers, refineries and steel; it is not export-only.

Option D:
Green hydrogen depends on renewable power; it does not replace renewables but builds on their expansion, so this statement is conceptually wrong.

Each term in the series is obtained by multiplying the previous term by 2, giving a constant ratio of 2. We have 3×2 = 6, 6×2 = 12 and 12×2 = 24, which confirms the rule. Applying the same operation to the last term gives 24×2 = 48. Thus, 48 is the only term that continues the geometric pattern correctly.

Option A:
Option A suggests 30, which would correspond to adding 6 rather than multiplying by 2. This change in operation does not match any of the earlier transitions in the series. Therefore, 30 does not fit the rule of constant multiplication.

Option B:
Option B maintains the ratio of 2 because 48 ÷ 24 = 2, just as 24 ÷ 12 and 12 ÷ 6 equal 2. The extended sequence 3, 6, 12, 24, 48 clearly follows a doubling rule. This makes 48 the unique correct choice under standard number-series logic.

Option C:
Option C gives 36, corresponding to a factor of 1.5 from 24, which has not appeared anywhere in the series. Introducing this new ratio would destroy the simplicity and consistency of the pattern. Hence, 36 cannot be considered correct.

Option D:
Option D offers 54, which would require multiplying 24 by 2.25. Since none of the previous steps uses such a factor and all use an exact doubling, this option contradicts the established rule. Therefore, it is not the right answer.

Statement D is wrong because carrying capacity is highly relevant to debates on population and sustainable development, highlighting ecological limits. Statements A, B and C are correct: they define carrying capacity, show its dependence on consumption and technology and explain consequences of overshoot. Thus, the combination that identifies D alone as wrong is correct.

Option A:
Option A is incorrect because it marks A as a wrong statement, but A is a correct definition of carrying capacity (maximum population without long-term degradation). Misclassifying a true definition makes this option invalid.

Option B:
Option B is incorrect because it groups A with D as wrong, even though A is correct. Including a correct statement among the wrong ones makes the combination unacceptable.

Option C:
Option C is incorrect since it marks both C and D as wrong. C is actually correct in noting that exceeding carrying capacity leads to depletion and stress, so this option incorrectly labels a true statement as wrong.

Option D:
Option D is correct because it singles out D as the only incorrect statement and implicitly acknowledges A, B and C as true. It aligns with the conceptual link between carrying capacity, population and sustainability.

A is correct because conditional probability measures A given B. B is the definition formula P(A|B) = P(A ∩ B)/P(B) (when P(B) > 0). C is true because Bayes’ theorem is used to update probabilities of hypotheses/causes when evidence is known. D is true for independent events since B does not change the probability of A. E is false because P(A|B) and P(not A|B) are complementary conditional probabilities and must sum to 1, not exceed 1. Therefore, A, B, C and D only are correct.

Option A:
Option A is incomplete because it omits D, which is a key property of independent events (conditioning does not change probability).

Option B:
Option B is correct because it includes all true statements (A, B, C, D) and excludes E, which wrongly claims the sum of complementary conditional probabilities is greater than 1.

Option C:
Option C is incorrect because it includes E (false) and also omits A and D, both of which are true statements about conditional probability and independence.

Option D:
Option D is incorrect because it includes E (false) and excludes B and C, which are fundamental definitions/uses of conditional probability and Bayes’ theorem.

Statements A, B, D and E correctly describe LANs, WANs, routers and client–server architecture. LANs cover small areas, WANs link widely separated locations, routers forward packets between networks and client–server models distinguish service providers from requesters. Statement C is false because bandwidth refers to data transfer capacity, not cable length, and F is false because peer-to-peer networks allow multiple nodes to initiate communication without a single central controller. Hence A, B, D and E only are true.

Option A:
Option A is incorrect because it omits E and therefore does not mention how client–server architecture distinguishes roles in a network. While A, B and D are true, the combination does not capture all correct statements.

Option B:
Option B is incorrect because it omits B and includes only A, D and E. Without B, the nature of WANs is not represented, so the set is incomplete even though the included statements are correct.

Option C:
Option C is correct because it includes all and only the accurate statements about network scope, devices and architectures. It excludes misconceptions about bandwidth and peer-to-peer communication, so it matches the intended correct set.

Option D:
Option D is incorrect because it includes F, which wrongly suggests a central node in peer-to-peer networks. This contradicts the basic idea of distributed peers, so the presence of F invalidates the combination.

ZIP utilities compress individual files to reduce their size and combine them into a single archive for easier storage or transmission. This makes it more efficient to email or upload multiple related documents at once. Decompression restores the original files when needed. Thus, the primary purpose described is compressing and bundling files.

Option A:
Option A, enlarging file size, is contrary to the actual effect of compression, which is to reduce storage requirements.

Option B:
Option B is correct because standard descriptions of ZIP emphasise its dual role in reducing size and grouping many files together into one convenient package.

Option C:
Option C, encrypting user passwords, may be an optional feature in some archive tools but is not the main purpose of ZIP as a format.

Option D:
Option D, deleting old records, is unrelated to creating an archive and would instead involve removal of data, not their preservation in compressed form.

NMEICT supports the creation of high quality digital learning materials, training of teachers and provision of broadband connectivity. Its aim is to democratise education by reaching learners in remote and disadvantaged regions. By emphasising access, equity and quality, the mission aligns with national policy goals. This option summarises that vision.

Option A:
This option correctly points to both infrastructure and content as focus areas. It recognises that ICT integration is not just about hardware but also about pedagogy and resource development. Such a holistic view is central to understanding the mission.

Option B:
Closing computer labs would reduce ICT access and contradict the mission’s purpose. NMEICT advocates more, not less, use of digital tools.

Option C:
Restricting resources to private companies would undermine public educational institutions and equity goals. NMEICT targets universities, colleges and students widely.

Option D:
Using ICT only for entertainment ignores its potential for academic transformation. NMEICT is explicitly about education, not just recreation.

Statements A, B, C, D and F are correct: early stages typically show high birth and death rates; death rates decline before birth rates in the transition phase causing rapid growth; resource pressure rises with rapid growth; final stage tends to low birth/death with stabilisation; and education/reproductive health policies influence progression. Statement E is false because demographic transition is central to population–environment analysis. Therefore, the correct combination is A, B, C, D and F only.

Option A:
Option A is correct because it includes all true statements (A, B, C, D, F) and excludes only E, which wrongly denies relevance of demographic transition to population–environment relationships.

Option B:
Option B is incorrect because it omits F, missing the policy drivers (education and reproductive health) that influence movement through stages.

Option C:
Option C is incorrect because it omits A; A is a standard feature of the early stage in demographic transition models.

Option D:
Option D is incorrect because it omits B, which explains the typical sequencing of mortality and fertility decline in the transition phase.

The Guttman scale, or cumulative scale, arranges items so that they represent increasing levels of a trait or attitude. In an ideal Guttman scale, if a respondent agrees with a high-level item, they would also agree with all lower-level items, creating a predictable response pattern. Scalogram analysis assesses how well the items approximate this cumulative structure. Therefore, the technique described in the stem is correctly termed a Guttman scale.

Option A:
Likert scales do not assume cumulative properties; respondents may agree with some items and disagree with others at similar levels without violating the model. They rely on summated ratings rather than hierarchical cumulative ordering.

Option B:
Semantic differential scales use bipolar adjective continua and do not consist of statements ordered by strength of attitude in a cumulative manner.

Option C:
The Guttman approach is particularly useful when measuring acceptance of progressively more extreme positions or behaviours, as it reveals how far along a continuum respondents are willing to go. This cumulative logic matches the stem’s requirement that agreement with a strong statement implies agreement with weaker ones, making this option correct.

Option D:
Thurstone scales employ expert-rated equal-appearing interval statements but do not require cumulative patterns across items in respondent choices.

Statements A and C correctly bring out key features of open and distance learning. A is true because flexibility in pace, place and timing is central to this mode of education. C is correct as many universities operate in dual mode, offering both campus-based and distance programmes. B is false since learner support services such as counselling, study centres and guidance are crucial in distance education. D is also false because distance learners are not prohibited from using digital technologies; rather, such technologies are widely used to support learning. Hence the correct combination is A and C only.

Option A:
Option A is correct because it selects A and C, the two statements that accurately describe flexibility and dual-mode provision in distance education. It excludes B and D, both of which misrepresent the role of support services and technology. This combination matches the actual practices in open and distance learning.

Option B:
Option B is incorrect because it treats B as correct, implying that support services are unnecessary. In reality, support systems are essential to minimise isolation and enhance success for distance learners, so including B makes the option inaccurate.

Option C:
Option C is incorrect because it assumes all four statements are correct, thereby accepting B and D. These two statements are clearly wrong since they deny the importance of learner support and the use of digital technologies, both of which are integral to contemporary distance education.

Option D:
Option D is incorrect because it combines C with D and leaves out A. While C is correct, D is false in claiming legal prohibition of digital technologies, and ignoring A omits the fundamental flexibility that characterises open and distance learning.