UGC NET Questions (Paper – 1)

Everyday counting and most written arithmetic activities use the decimal system. This system is based on ten symbols, 0 through 9, and is therefore called a base-10 or decimal system. Historically it is linked to humans having ten fingers, which made grouping in tens natural. Thus, the decimal system is the usual human counting system.

Option A:
Option A is correct because decimal notation underlies standard arithmetic taught in schools and used in currencies and measurements. Its base 10 structure is reflected in common units such as tens, hundreds and thousands. This makes it the default system for human counting.

Option B:
Option B, binary, is primarily used inside digital circuits and computer processors where two distinct states are easy to implement. It is not the system used in ordinary human counting in daily life.

Option C:
Option C, octal, uses base 8 with digits 0 to 7 and is occasionally used as a shorthand for binary. However, it is not the dominant system for general human activities.

Option D:
Option D, hexadecimal, is a base-16 system widely used in computing for compact representation of binary values, but it is not used for routine human counting tasks.

Mission LiFE is conceptualised as a mass movement to encourage individuals and communities to adopt mindful and deliberate utilisation of resources. It aims to reduce wasteful consumption, promote sustainable habits and align everyday choices with environmental protection. By focusing on behaviour change, it links climate action with lifestyle, making every citizen a stakeholder in development that respects planetary limits. This approach integrates environmental responsibility into daily life rather than treating it as a separate technical domain. (NITI Aayog)

Option A:
This option correctly captures the central idea of Mission LiFE, which emphasises changing lifestyles and consumption patterns to reduce environmental footprints. It recognises that climate and environmental challenges are not only about technology and policy but also about how people live, consume and conserve. The focus is on positive, practical actions that ordinary people can take without sacrificing development aspirations.

Option B:
This option is incorrect because Mission LiFE is not about expanding fossil-fuel based thermal power; in fact, it encourages reduced dependence on carbon-intensive choices. Large thermal power projects may be part of the overall energy mix today, but they are not the focus of LiFE’s behavioural campaign. Linking LiFE only with thermal capacity would ignore its demand-side orientation.

Option C:
Direct cash transfers may be used in some welfare schemes, but LiFE is built around nudging and enabling sustainable behaviours rather than unconditional cash benefits. The initiative stresses awareness, community mobilisation and enabling green choices, not income support independent of environmental performance. Therefore, this description misses the programme’s core philosophy.

Option D:
Replacing environmental laws with purely voluntary corporate codes would weaken regulatory safeguards and is not the intent of LiFE. The initiative complements, rather than substitutes, environmental regulations by mobilising citizens and communities. Its emphasis is on shared responsibility and lifestyle shifts, not deregulation.

Statements A, B, C and E are correct because standards exist for air, water and noise, and regular monitoring is required to see whether actual conditions meet these limits. Statement D is false, since even legally binding standards require regulatory institutions, penalties and compliance mechanisms to be effective. Statement F is false too because public disclosure of data supports transparency and can create pressure for better enforcement. Therefore, the set that keeps A, B, C and E while excluding D and F is correct.

Option A:
Option A is incorrect as it omits E and thereby ignores the crucial role of monitoring in making standards meaningful. Without E, there is no way to check compliance systematically.

Option B:
Option B is incorrect since it leaves out C, thus failing to mention noise standards, which are part of environmental quality frameworks, especially in urban areas.

Option C:
Option C is incorrect because it includes D, which wrongly suggests that standards never need enforcement mechanisms. Including D mixes a clearly false claim with correct statements.

Option D:
Option D is correct as it retains all the true statements about what standards are and how they are applied, while rejecting the idea that enforcement and public information do not matter.

Environmental education seeks to build knowledge,values and attitudes that lead to caring and responsible action for the environment. Developing awareness and concern is foundational because people must first understand and care about issues before they change behaviour. The stem explicitly mentions positive orientation and responsible behaviour,which comes from awareness and concern. Hence Option B is correct.

Option A:
Apathy is lack of concern,which is opposite to the goal of environmental education.

Option B:
Awareness and concern directly support responsible environmental behavior and match the aim described in the stem.

Option C:
Exploitation skills contradict the stewardship and sustainability focus of environmental education.

Option D:
Purely commercial skills focus on profit and do not match the environmental responsibility goal stated.

Statements A, B and C correctly distinguish LAN, WAN and MAN by their geographical coverage. LANs serve limited areas like buildings, WANs can span entire countries or continents, and MANs typically cover metropolitan regions. Statement D is false because LANs can be implemented using wired, wireless or mixed technologies. Thus, the combination that includes A, B and C but excludes D is the correct answer.

Option A:
Option A is incorrect because it mentions only A and B as correct and omits C. While A and B are true, statement C is also correct in associating MAN with city-wide networks. Leaving out a true statement means this option does not present the full set of correct statements.

Option B:
Option B is correct because it brings together A, B and C, all of which are accurate descriptions of common network types. It rightly excludes D, which wrongly claims that LANs must always be wireless. Therefore this option aligns with standard ICT classifications of networks by scope.

Option C:
Option C is incorrect because it includes D alongside B and C. Although B and C are true, D is false because LANs may be wired, wireless or a combination. Including a false statement invalidates the combination.

Option D:
Option D is incorrect because it assumes all four statements are correct. Statement D misrepresents the nature of LAN technologies and should not be included among correct statements. A valid answer must exclude that incorrect statement.

Statements A, B and D are correct, whereas C and E are incorrect. A is true because clickers or apps can capture students’ answers in real time. B is true as forums allow questions and interaction outside class. D is true since multimedia simulations help visualise difficult ideas. C is false because equal participation still requires careful facilitation, and E is false because ICT supplements rather than replaces teacher–student dialogue. Hence, A, B and D only is the correct combination.

Option A:
Option A presents A, B and D, bringing together instant feedback, extended communication and visual support, and omitting C and E, which exaggerate what technology can do. Since all statements in this option are correct and the false ones are excluded, A, B and D only is the right answer.

Option B:
Option B lists A and B only and leaves out D, failing to mention the explanatory potential of video and simulations for abstract concepts. As a result, A and B only does not fully address the range of ICT tools mentioned in the question.

Option C:
Option C combines B, D and E, but E wrongly claims that dialogue becomes unnecessary when ICT is used. Including this extreme view makes B, D and E only an invalid answer.

Option D:
Option D groups A, C and D, but C is incorrect because participation patterns are not automatically equal in technology-rich settings. Consequently, A, C and D only cannot be accepted.

Statements A, B and C are correct, while D is the only wrong statement. A is correct because open-ended questions encourage learners to think beyond simple facts and explore higher-order responses. B is correct as an exclusive focus on recall questions can limit development of analytical skills. C is correct because providing wait-time after posing a question allows more learners to formulate thoughtful responses. D is wrong since teachers should usually resist answering their own questions immediately; instead they should allow students time to respond.

Option A:
Option A is incorrect because it identifies A and B as the wrong statements. In fact both A and B are sound recommendations: open-ended questions do stimulate higher-order thinking, and reliance only on recall questions is indeed limiting. Since neither A nor B is wrong, this combination cannot represent the set of wrong statements.

Option B:
Option B is correct because it singles out D only as the wrong statement. D suggests that teachers should always answer their own questions immediately, which contradicts the idea of giving learners time to think and respond. By excluding A, B and C, which are all true, this option correctly captures the single wrong strategy described in the list.

Option C:
Option C is incorrect because it lists B and D as wrong statements. While D is indeed wrong, B accurately warns that exclusive use of recall questions can limit higher-order thinking. Treating B as wrong misrepresents the effects of such questioning, so this combination is not acceptable.

Option D:
Option D is incorrect because it treats A, B and D as a set of wrong statements. As explained, A and B are true statements about the value of open questions and the limits of recall-only questioning. Including these correct statements alongside D in the supposed wrong set makes this option overinclusive.

Badhita hetu is considered defective because its alleged vyapti cannot stand in the face of more authoritative evidence. For example, a reason that implies that fire is cold is immediately overturned by direct perception of heat. In such cases, even if the formal structure of the inference looks acceptable, the underlying universal relation is invalidated. Nyaya therefore treats the reason as defeated or badhita.

Option A:
Option A, savyabhicara, concerns irregularity of a reason across instances and not explicit conflict with a stronger pramana. The issue there is empirical deviation, not direct refutation.

Option B:
Option B, asiddha, involves non-establishment of the hetu in the paksha rather than its being contradicted at the level of vyapti.

Option C:
Option C is correct because badhita literally means "defeated" and is used when a proposed relation is annulled by superior sources like perception or scripture. It shows the need for harmony among pramanas in Nyaya.

Option D:
Option D, viruddha, denotes a reason that proves the opposite conclusion on its own, without needing external refutation, which is a different kind of defect.

Statements A and B capture that validity is about form, not actual truth of premises. Statement C correctly defines the fallacy of affirming the consequent. Statement E is true because many reasoning questions test the distinction between validity and soundness. Statement D is false since a sound argument is valid and has true premises. Hence A, B, C and E only are correct.

Option A:
Option A is incomplete because it omits E (importance of the distinction) even though A, B, C are true.

Option B:
Option B is incomplete because it omits B (valid with false premises) and also does not include all correct statements together.

Option C:
Option C is correct because it gathers all true statements and excludes D, which reverses the condition for soundness.

Option D:
Option D is wrong because it includes D (false), even though it contains some true statements.

Mass communication involves transmitting messages from a single source to large,heterogeneous and dispersed audiences through technological media. A television station sending programmes to millions simultaneously is a classic one to many pattern. Thus the situation in the stem clearly represents mass communication.

Option A:
Interpersonal communication is limited to a few people in direct interaction and cannot describe a nationwide TV broadcast.

Option B:
Mass communication relies on institutional senders and technical channels like TV towers,satellites and cable networks,making this option correct for the described scenario.

Option C:
Group communication involves face to face interaction among a small number of participants,not a mass audience.

Option D:
Intrapersonal communication is internal thinking and has nothing to do with broadcast media.

This sequence is defined by the rule (a_n = 3n^4 - n^2 + 2) with n starting from 1. For n = 1, 2, 3, 4 and 5 we compute 3−1+2 = 4, 48−4+2 = 46, 243−9+2 = 236, 768−16+2 = 754 and 1875−25+2 = 1852. For n = 6 we calculate (3×6^4 - 6^2 + 2 = 3888 - 36 + 2 = 3854). Therefore 3854 is the correct next term.

Option A:
Option A, 3854, is exactly the value produced by the formula for n = 6. It preserves the quartic and quadratic contributions in the same way as for the earlier terms and keeps the pattern coherent. Thus 3854 is the correct continuation of the series.

Option B:
Option B, 3818, is 36 less than the correct value and does not equal (3×6^4 - 6^2 + 2). It suggests an unwarranted reduction that is not reflected in the previous behaviour. Hence 3818 is not valid.

Option C:
Option C, 3886, overshoots the computed value and again fails to satisfy the formula. Choosing 3886 would break the algebraic structure and introduce an arbitrary jump. Therefore 3886 is not correct.

Option D:
Option D, 3922, deviates even more from 3854 and has no basis in the generating expression. Using 3922 would destroy the close match between the rule and the data, so it is not the right answer.

Statements B, C and D are correct because they acknowledge the contributions and vulnerabilities of informal waste workers and the importance of inclusive policies. Integrating them can raise recycling levels and improve livelihoods, they face significant health risks, and punitive approaches without alternatives can backfire. Statement A is incorrect since informal waste pickers do contribute substantially to resource recovery and recycling in many cities. Hence, the combination B, C and D only is the correct answer.

Option A:
Option A is incorrect because it leaves out D, which is a valid statement on the negative consequences of criminalising informal waste activities. Omitting this dimension of policy impacts results in an incomplete picture of urban solid waste management.

Option B:
Option B is correct as it selects exactly the three true statements that align with field evidence and policy recommendations, while excluding A which denies the known role of informal recyclers. It recognises both the environmental and social justice aspects involved.

Option C:
Option C is incorrect because it includes statement A, which wrongly claims that informal pickers have no role in recycling. Including such a statement undermines the accuracy of the option even though B and C are correct.

Option D:
Option D is incorrect as it treats all four statements as correct, thereby accepting A. This contradicts numerous studies and practical observations about the contribution of the informal sector to recycling.

Agenda setting theory argues that media influence what people think about by repeatedly highlighting certain issues. When pollution receives continuous coverage,citizens come to view it as highly important. The stem describes exactly this process of raising issue salience,so agenda setting is the correct term.

Option A:
Gatekeeping refers to selection of stories before publication,whereas agenda setting concerns emphasis after selection.

Option B:
Agenda setting increases issue salience through repeated coverage,matching the stem.

Option C:
Framing focuses on how issues are presented rather than simply how often they appear.

Option D:
Ritual views stress symbolic participation,not prioritisation of issues.

Construct validity concerns whether a measurement instrument accurately represents and captures the underlying theoretical construct, such as intelligence or motivation. It is established by examining relationships with other variables, factor structure and theoretical coherence. High construct validity means the test behaves as the theory predicts. Therefore, the type of validity described in the stem is called construct validity.

Option A:
Option A names construct validity, which integrates evidence from multiple sources such as convergent and discriminant validity. It focuses on the match between the abstract concept and its operational indicators. Because the stem refers to measuring the intended theoretical construct, this option is correct.

Option B:
Content validity assesses whether an instrument adequately covers the full range of the domain of content, such as syllabus topics, but does not directly address theoretical constructs beyond the domain. It focuses on item coverage rather than theoretical meaning, so it is not the best completion.

Option C:
Criterion-related validity evaluates how well test scores predict or relate to an external criterion, such as future performance, either concurrently or predictively. While related to accuracy, it is not specifically about alignment with theoretical constructs. Hence, it is not correct here.

Option D:
Face validity refers to the extent to which a test appears to measure what it intends to measure, based on superficial judgment by users or experts. It is more about appearance than deep theoretical accuracy. Therefore, it does not match the stem.

Interactive communication is characterised by ongoing feedback and adjustment between participants. In the stem,the teacher listens to students’ questions and changes explanations accordingly. This shows active two-way influence and adaptation. Therefore,the communication is best described as interactive.

Option A:
Ritualistic communication occurs when routines are followed without much concern for meaning,such as formal greetings; it does not describe responsive teaching.

Option B:
Mechanical communication would imply rigid,unthinking transmission of information,which is the opposite of adapting explanations based on student reactions.

Option C:
Interactive communication helps align teaching with learners’ needs,so option C correctly captures the nature of the classroom described.

Option D:
Unidirectional communication suggests one-sided flow without meaningful feedback,which conflicts with the teacher’s active use of student reactions in the stem.