UGC NET Questions (Paper – 1)

Internal validity refers to the degree to which a study is free from confounding influences and alternative explanations, so that changes in the dependent variable can be ascribed to the independent variable. High internal validity is achieved through control of extraneous variables, random assignment and appropriate design. It is crucial in experimental research where causal claims are being made. Because the stem describes attributing observed changes to the manipulation of the independent variable, internal validity is the correct term.

Option A:
External validity concerns the generalisability of findings to other populations, settings or times, rather than the correctness of causal inference within the study. A study can be internally valid but externally limited, so external validity does not match the stem.

Option B:
Ecological validity focuses on how well research findings reflect real-world behaviours and contexts, often associated with naturalistic settings. While related to generalisability, it is not about directly attributing effects to independent variables in a controlled design. Thus, ecological validity is not the appropriate completion here.

Option C:
Internal validity is enhanced by using control groups, randomisation and standardised procedures to isolate the effect of the independent variable. When these strategies are successful, researchers can more confidently claim that the treatment caused the observed outcomes. This is precisely what the stem is describing.

Option D:
Face validity simply indicates whether a test or study appears, on the surface, to measure what it claims to measure, as judged by laypersons. It does not address deeper issues of causal attribution and control over confounds, so it is not the correct answer.

Statements A, C and D correctly describe digital footprints and cyber ethical behaviour, whereas statement B is false. A digital footprint consists of data traces left by online actions, and organisations may review these traces when assessing candidates. Cyber ethics requires awareness of these consequences and responsible posting. Deleting a post does not guarantee that no copies remain, because caches, screenshots or backups may persist. Thus, the combination A, C and D only is correct.

Option A:
Option A is incomplete because it groups A and C only and leaves out D. While understanding what digital footprints are and how they are used is important, ethical reflection and responsible posting described in D are also essential. Excluding D underplays the behavioural aspect of cyber ethics.

Option B:
Option B is incorrect because it includes A, B and C as correct, thereby accepting B. Statement B wrongly suggests that deletion removes all traces, ignoring the persistence of data in various systems. Including this false statement makes the combination invalid.

Option C:
Option C is incorrect because it lists C and D only and omits A. Without defining a digital footprint as data traces left online, the explanation of the concept is incomplete. A is fundamental to the topic and cannot be left out.

Option D:
Option D is correct because it brings together the three true statements A, C and D and excludes B, which gives a misleading sense of security about deletion. It integrates conceptual understanding and ethical practice, which is appropriate for ICT education.

A research paradigm encompasses ontological and epistemological assumptions about what reality is like and how knowledge about it can be obtained. It shapes preferences for certain methodologies, such as quantitative or qualitative approaches, and informs how results are interpreted. Common paradigms include positivism, interpretivism and critical theory. Therefore, the basic worldview guiding research choices is correctly called a research paradigm.

Option A:
Variables are measurable characteristics within a study but do not constitute an overarching belief system about reality and knowledge. They are components of research, not its philosophical foundation, so variable is not appropriate.

Option B:
Hypotheses are specific testable propositions derived within a paradigm but do not themselves define the broader worldview; they are subordinate to the paradigm’s assumptions. Hence, hypothesis is not the best completion.

Option C:
Option A, paradigm, reflects the idea that different researchers may interpret the same phenomenon differently depending on their underlying philosophical stance, leading to different designs and methods. This aligns with the stem’s emphasis on a basic set of beliefs guiding research.

Option D:
Statistics are tools for analysing numerical data and are used under many paradigms but do not themselves prescribe a worldview. Therefore, statistic is not the correct answer.

Many Buddhist epistemologists, notably Dignāga and Dharmakīrti, simplify pramāṇa theory to two basic sources: perception (pratyakṣa) and inference (anumāna). They argue that other alleged means, such as testimony or comparison, can be reduced to combinations or applications of these two. This two pramāṇa view contrasts with the fourfold Nyāya and the more expansive lists of some Mīmāṃsā schools.

Option A:
Option A aligns with Buddhist texts that elevate perception and inference as the only ultimate pramāṇas, treating other modes as derivative or reducible.

Option B:
Option B wrongly promotes testimony to independent status in this context; Buddhists typically interpret scripture through inference and do not add it as a separate source.

Option C:
Option C adds comparison as an independent pramāṇa, which is not accepted in standard Buddhist epistemology.

Option D:
Option D chooses testimony and presumption, neither of which form the canonical Buddhist pair of pramāṇas.

All five statements correctly describe the five members of the Nyaya syllogism (pratijñā, hetu, udāharaṇa, upanaya, nigamana). Therefore all are correct and the right option must include A–E.

Option A:
Option A is incomplete because it omits E (nigamana).

Option B:
Option B is incomplete because it omits D (upanaya).

Option C:
Option C is incomplete because it omits C (udāharaṇa).

Option D:
Option D is correct because it includes all five true statements.

Statements A, B and C set out accepted principles of questionnaire construction: alignment with objectives, avoidance of double-barrelled wording and a clear, logical layout. Statement D is false because leading questions bias responses and threaten validity, and E is false since questionnaires often combine closed and open-ended items. Thus, the combination including A, B and C, and excluding D and E, is correct.

Option A:
Option A is incomplete because it does not include C, leaving out the importance of layout and sequencing for respondent comprehension and data quality. A and B alone do not cover all major design concerns.

Option B:
Option B is incorrect because it omits A, failing to stress that each item should relate directly to the study’s objectives, which is fundamental for content validity.

Option C:
Option C is wrong because it incorporates E, which incorrectly demands that all items be open-ended, and omits B, which correctly warns against double-barrelled questions. This mix of omission and error makes the option invalid.

Option D:
Option D is correct as it gathers the three statements that reflect good practice while rejecting D and E, which promote bias and an unnecessarily restrictive view of question format.

Each octal digit converts to a 3-bit binary pattern. For 73₈, the digit 7 maps to 111₂ and the digit 3 maps to 011₂. Combining these gives 111011₂. This pattern is the binary equivalent of the octal number 73.

Option A:
Option A is correct because 7→111₂ and 3→011₂, so 73₈ becomes 111011₂. This maintains the positional values exactly across bases.

Option B:
Option B, 111101₂, would represent octal 75₈, since 101₂ corresponds to 5. It therefore does not match the given octal number.

Option C:
Option C, 110111₂, maps back to octal 67₈, with groups 110₂ and 111₂ representing 6 and 7. This differs from 73₈.

Option D:
Option D, 101111₂, would correspond to octal 57₈. The grouping of bits does not align with 73₈.

Each group is a block of three consecutive letters written in reverse order: ZYX (26–24), WVU (23–21), TSR (20–18) and QPO (17–15). The starting letters move backward by 3 positions: Z, W, T, Q. The next starting letter is N (14), and the reversed block from 14–12 is NML. Thus NML continues both the block size and the backward progression.

Option A:
Option A, ONM, uses the same letters but in a different arrangement. It begins with O (15), not N (14), breaking the backward step of 3 from Q. Therefore ONM does not satisfy the starting-letter rule.

Option B:
Option B, MNO, lists the letters in forward order rather than reverse. The pattern clearly uses descending triples. As it reverses the direction within each block, MNO cannot be the correct continuation.

Option C:
Option C is correct because it starts at N, which is exactly 3 positions before Q, and presents the triple in descending order N, M, L. This mirrors the structure of the previous groups and adheres to the same step size in the starting letters.

Option D:
Option D, KJI, begins too far back and uses a starting letter K that is 7 positions before Q. This does not match the consistent spacing seen between earlier groups. Hence KJI is not compatible with the pattern.

The positions of the letters are A(1), C(3), F(6), J(10) and O(15). The successive differences are +2, +3, +4 and +5, forming an increasing sequence of natural numbers. The next difference should be +6, so the next position is 15 + 6 = 21, which corresponds to U. Therefore U is the only letter that continues the pattern of steadily increasing gaps.

Option A:
Option A, T, lies at position 20, giving a difference of 5 from O. This simply repeats the last increment instead of increasing it to 6. Since the series clearly shows the gaps growing by 1 each time, T does not meet the rule.

Option B:
Option B, U, is correct because its position 21 equals 15 + 6, matching the expected next difference. It maintains the idea that each step forward in the series uses a gap one larger than before. This adherence to the underlying numerical pattern makes U the valid continuation.

Option C:
Option C, V, at position 22, would correspond to a +7 jump from O. That goes beyond the required next difference of +6 and distorts the incremental pattern. As a result, V cannot be accepted as the next term in the series.

Option D:
Option D, W, at position 23, deviates even more from the predicted increment by adding 8. This breaks the smooth progression of 2, 3, 4, 5, 6 in the differences. Hence W is not consistent with the logic of the sequence.

NEP 2020 encourages the creation and use of high-quality OER to widen access, reduce costs and allow teachers to adapt materials to local contexts, provided quality and licensing norms are respected.

Option A:
Option A is incorrect because banning OER would limit access to affordable, adaptable learning resources and goes against the policy’s equity and openness goals.

Option B:
Option B is correct since it matches NEP’s positive stance on encouraging freely shareable, high-quality educational resources across subjects and levels.

Option C:
Option C is wrong because NEP promotes the use of OER throughout the education system, not only in private universities.

Option D:
Option D is incorrect as OER are meant for a wide range of curricular areas, not just for a narrow use such as sports coaching videos.

Statements A, B, C and E correctly describe the Nyaya distinction between pramāṇa as means of knowledge and prameya as the objects known, and give perception and inference as standard examples. D is false since the same object can be known via multiple pramāṇas. Hence the true statements are A, B, C and E only.

Option A:
Option A is correct because it includes both the conceptual distinctions and the exam-oriented statement, while excluding D, which restricts prameya in a way Nyaya does not accept.

Option B:
Option B is incomplete as it leaves out E, failing to mention common exam classification tasks.

Option C:
Option C is incorrect because it omits A, leaving out the definition of pramāṇa as a means of valid knowledge.

Option D:
Option D is wrong since it includes D (false) and omits B (true).

NEP 2020 calls for strengthening NIOS and state open schools so that children and youth who missed regular schooling can still complete their education. Open schooling offers flexible entry, pacing and modes, making it a key strategy for universalising school education.

Option A:
Abolishing open schooling would remove an important second-chance mechanism and go directly against NEP’s recommendation to expand and improve it.

Option B:
This option is correct because it directly states the inclusion-oriented purpose of open schooling: flexible pathways for those who dropped out or never enrolled.

Option C:
Reserving open schooling only for foreign nationals ignores its primary purpose of serving Indian learners who are out of school.

Option D:
Replacing all regular schools with open schooling is not suggested; NEP sees open schooling as complementary to, not a substitute for, regular schools.

Statements A, B and D are correct descriptions of learner participation techniques. A is true because brainstorming postpones judgement to enable free flow of ideas. B is true as think–pair–share structures participation from individual reflection to peer talk and whole-class sharing. D is true since role play allows students to experience different viewpoints through enactment. C is false because participation strategies benefit learners across ability levels, and E is false because equitable participation requires involving many students, not just a vocal minority; therefore A, B and D only is the correct combination.

Option A:
Option A combines A, B and D, accurately presenting brainstorming, think–pair–share and role play as participatory methods. It properly excludes C and E, which restrict participation to a few students or a narrow ability group, so this option is correct.

Option B:
Option B lists A and B but omits D, ignoring the role of role play in encouraging empathy and perspective-taking. Without D, the description of participation techniques is incomplete.

Option C:
Option C brings in B and D but leaves out A, underestimating the contribution of brainstorming as a widely used participation strategy. This omission means B and D only cannot be the full set of correct statements.

Option D:
Option D includes A, C and D but adds C, which wrongly limits the usefulness of participation techniques. Accepting C makes this combination logically unsound.

Option E extends A, B and D with C, again accepting the incorrect claim that such techniques are only for high-ability students. Because it mixes true and false statements, A, B, C and D only is not a valid answer.

Statements A, B, D and E correctly describe how bandwidth and QoS relate to e-learning services, while C and F are false. Bandwidth is a data rate, QoS can prioritise real-time traffic and low bandwidth leads to buffering. Monitoring usage allows institutions to make informed upgrade decisions. Networks rarely treat all traffic equally under congestion, and oversupply of bandwidth does not remove the need for management, so C and F must be excluded.

Option A:
Option A is correct because it integrates definitions, technical mechanisms, service quality effects and planning practices into one coherent set. It recognises that both capacity and management matter for reliable e-learning.

Option B:
Option B is incorrect because it omits E, and therefore does not mention monitoring and planning. While A, B and D are true, they do not cover the long-term capacity management aspect.

Option C:
Option C is incorrect because it excludes A, which provides the foundational concept of bandwidth. B, D and E are true, but without A, the explanation of what is being managed in QoS and capacity planning is incomplete.

Option D:
Option D is incorrect because it omits B, thereby ignoring QoS mechanisms as a way to protect time-sensitive traffic. A, D and E are correct, yet the absence of B weakens understanding of how networks can handle mixed applications.

The sequence is governed by aₙ = 2n⁴ + n² − 2 for n starting from 1. Substituting n = 1, 2, 3, 4 and 5 gives 2·1⁴+1²−2 = 1, 2·2⁴+2²−2 = 34, 2·3⁴+3²−2 = 169, 2·4⁴+4²−2 = 526 and 2·5⁴+5²−2 = 1273, confirming the rule. For n = 6 we have 2·6⁴+6²−2 = 2·1296+36−2 = 2592+36−2 = 2626. Thus 2626 is the unique value that continues this quartic-based pattern.

Option A:
Option A, 2594, is 32 less than the value mandated by the formula and does not satisfy 2n⁴+n²−2 for n = 6. It would require an unexplained reduction in the final term relative to the established rule. Therefore this option is not compatible with the structure of the sequence.

Option B:
Option B, 2610, is closer but still not equal to 2626 and again fails to arise from substituting n = 6 into the expression. Choosing 2610 would modify the pattern only at the last point, which is mathematically unsound. Hence option B is not correct.

Option C:
Option C, 2626, exactly matches the computed value from aₙ = 2n⁴+n²−2 when n = 6. It preserves the balance between the quartic and quadratic components that generated the earlier terms. Because it follows naturally from the same algebraic rule, 2626 is the correct next term in the series.

Option D:
Option D, 2642, overshoots the formula’s output by 16 and does not respect the rule 2n⁴+n²−2. Selecting 2642 would break the precise connection between term position and term value. Therefore option D cannot be accepted as a valid continuation.