UGC NET Questions (Paper – 1)

Statement D is the only wrong statement because ozone layer depletion clearly affects human health and ecosystems through increased UV exposure. Statements A, B and C correctly describe the role of CFCs and halons, protective function of the ozone layer and the purpose of the Montreal Protocol. Increased UV-B can cause skin cancer, cataracts and harm to phytoplankton and terrestrial plants. Therefore, the combination that identifies D alone as wrong is the correct answer.

Option A:
Option A is correct because it isolates statement D as the single wrong statement while recognising that A, B and C are scientifically well established. It reflects the consensus that ozone depletion has serious consequences for health and ecosystems. This option therefore matches the requirement to select the wrong statement or statements.

Option B:
Option B is incorrect because it treats both A and D as wrong. Statement A is correct since CFCs and halons are classic ozone-depleting substances identified in atmospheric chemistry studies. Misclassifying A as wrong shows a misunderstanding of the basic cause of ozone depletion.

Option C:
Option C is incorrect as it considers B and D to be wrong together. Statement B is in fact correct because the ozone layer’s filtering of UV radiation is a fundamental part of atmospheric science. Including B among wrong statements makes this combination unacceptable.

Option D:
Option D is incorrect because it treats C and D as wrong. Statement C accurately summarises the main purpose of the Montreal Protocol, which is a key treaty in global environmental governance. Since only D is wrong, combining it with C produces an incorrect option.

NEP 2020 argues that regulators should set high but clear quality norms and then allow institutions autonomy in how to meet them. This is described as “light but tight” regulation. The system should be tight on basic requirements and transparency, but light on day-to-day interference. Therefore this option reflects the core idea.

Option A:
This option describes heavy micromanagement of institutions by regulators, which is the opposite of the “light” approach to day-to-day control that NEP recommends.

Option B:
This option explains that regulation should focus on outcomes and essential conditions, not on controlling every detail. It supports institutional creativity while ensuring accountability, and therefore reflects NEP’s idea of “light but tight”.

Option C:
Total absence of regulation would risk poor quality and exploitation; NEP does not support this.

Option D:
Fee issues are important but only one part of regulation; NEP insists that academic quality, transparency and governance must also be regulated.

Statements A, B and D accurately describe key capabilities of spreadsheet software, while statement C is false. Spreadsheets are designed to arrange data in tabular form, support formulas and functions and enable what-if analysis. They also provide tools for generating charts and graphs from tabular data, so claiming that charts cannot be generated is incorrect. Thus, the combination A, B and D only is correct.

Option A:
Option A is incorrect because it includes only A and B and omits D. Although A and B are true, D is also correct in highlighting the role of spreadsheets in data analysis and scenario testing. Leaving out a true statement makes this option incomplete.

Option B:
Option B is incorrect because it selects B and D only and omits A. Statement A is fundamental, describing the tabular structure of spreadsheets. Any answer that excludes this essential property fails to capture the full set of correct statements.

Option C:
Option C is correct because it groups A, B and D together and excludes C. It recognises that spreadsheets offer tables, functions and analytical tools. By leaving out the false statement denying chart creation, it accurately reflects spreadsheet features.

Option D:
Option D is incorrect because it treats all four statements as correct, thereby accepting C. Since C misrepresents spreadsheet capabilities regarding chart generation, the entire combination becomes invalid.

Statements A, B, D and E are correct. A restates the basic simple interest rule. B is true because with annual compounding, one compounding per year means effective and nominal rates coincide. D is correct since more frequent compounding at the same nominal rate increases total interest. E is also true; at low rates and short durations, simple and compound interest often differ negligibly. C is false because more frequent compounding makes the effective annual rate higher, not lower, than the nominal rate. So A, B, D and E only are correct.

Option A:
Option A is incomplete because it omits E, which notes the practical observation that, for small rates and short periods, the difference between SI and CI can be very small.

Option B:
Option B is correct since it collects all the accurate statements about calculation bases, effective rates and compounding frequency, while excluding C, which reverses the relationship between nominal and effective rates.

Option C:
Option C is wrong because it includes C, which misstates the effect of multiple compounding periods, and therefore cannot represent the full set of correct statements.

Option D:
Option D is incorrect as it retains C (false) and omits B (true), so it both includes an error and misses a key correct statement.

The series follows the rule (a_n = n^4 + 4n^2 - 2) with n starting from 1. For n = 1, 2, 3, 4 and 5 the expression yields 3, 30, 115, 318 and 723, as in the question. For n = 6 we compute (6^4 + 4×6^2 - 2 = 1296 + 144 - 2 = 1438). Therefore 1438 is the correct next term in the sequence.

Option A:
Option A, 1414, is 24 less than the formula’s output and does not equal (6^4 + 4×6^2 - 2). It would impose an artificial reduction that the pattern does not support. Hence 1414 is not consistent with the rule.

Option B:
Option B, 1438, matches exactly the result of the expression for n = 6. It preserves the quartic and quadratic contributions in exactly the same way as for earlier terms. This alignment makes 1438 the correct answer.

Option C:
Option C, 1454, overshoots the computed value and cannot be derived from the formula for n = 6. Choosing 1454 would disrupt the precise algebraic structure of the series. Thus 1454 is not valid.

Option D:
Option D, 1470, deviates even more from 1438 and once again fails to satisfy the rule. Using 1470 would break the tight connection between index and term, so it is not correct.

ABC is conceived as a national-level digital credit repository. Students earn credits from recognised HEIs, and these are recorded in their ABC account. When they move institutions or re-enter after a break, credits can be transferred and counted towards a qualification. This enables genuine portability and lifelong learning.

Option A:
Storing money is the role of financial institutions, not ABC.

Option B:
This option correctly describes ABC as a credit, not financial, bank.

Option C:
Question-setting for exams is handled by universities and testing agencies, not ABC.

Option D:
Accreditation is done by NAC and related regulators, not by the credit bank.

Encryption uses mathematical algorithms to transform plaintext into ciphertext that appears meaningless without the correct key. This protects the confidentiality of sensitive data as it travels over networks or resides on storage devices. Even if attackers intercept the data, they cannot easily interpret it without decryption keys. Thus, the protective process described in the stem is encryption.

Option A:
Option A, compression, reduces the size of data for efficient storage or transmission but does not intentionally hide the content from unauthorised viewers.

Option B:
Option B is correct because encryption is explicitly defined as encoding information to prevent unauthorised disclosure and is a cornerstone of contemporary ICT security practices.

Option C:
Option C, formatting, prepares storage media or arranges document appearance and does not inherently provide confidentiality.

Option D:
Option D, duplication, involves making copies of data, which can actually increase exposure rather than protect against access.

Non-point sources are diffuse and hard to trace to a single discharge point. Agricultural runoff occurs when rain washes fertilisers, pesticides and soil from many fields into streams and rivers. The pollution comes from a wide area, not one identifiable pipe. Therefore, diffuse farm runoff is a classic example of non-point source water pollution.

Option A:
Option A is incorrect because a factory discharge pipe has a clearly identified location. Such a pipe is a point source that can be monitored and regulated directly.

Option B:
Option B is incorrect; leakage from a specific underground tank has a discrete location and is therefore treated as a point source, even though detecting the leak may be challenging.

Option C:
Option C is correct as it describes pollution entering water bodies over large surfaces. Managing it requires land-use practices and watershed approaches rather than simple end-of-pipe treatment.

Option D:
Option D is incorrect because a sewage outlet from a treatment plant is another example of a point source. Its flow can be sampled and controlled at one point.

The memory level of teaching is the lowest level in the hierarchy of levels of teaching. It focuses on rote learning, drill and repetition to ensure that students can recall facts, definitions and formulas. At this level, learners are not expected to understand underlying meanings or relationships. Therefore, teaching that emphasizes memorization and recall of facts is correctly described as operating at the memory level.

Option A:
The reflective level of teaching involves complex problem-solving, hypothesis formation and critical thinking. At this level, students are encouraged to reflect on their thinking and evaluate evidence. Such processes go far beyond simple memorization, so this option does not match the description given in the stem.

Option B:
The understanding level of teaching aims at ensuring that students comprehend ideas, can interpret them and may apply them in familiar situations. It emphasizes meaning and relationships rather than simple recall. Consequently, it cannot be associated with teaching that is confined mainly to rote learning and drill.

Option C:
The autonomous level of teaching, when discussed, refers to learners taking responsibility for their own learning and being self-directed. It presupposes higher mental functioning and self-regulation, which are not features of rote learning. Therefore, this option does not align with the focus on memorization and drill.

Option D:
Memory level of teaching specifically denotes instruction that seeks to imprint information in memory through repetition, practice and recall-based questioning. It is teacher-centred, stimulus–response oriented and limited to lower-order objectives. Hence, this option accurately characterizes the kind of teaching described in the question.

The Green Credit Programme is intended to encourage positive environmental actions by various actors through a system of credits. Stakeholders who undertake approved activities, like plantation on identified degraded lands, receive green credits that can later be traded on a designated platform. The rules were notified under the Environment (Protection) Act in October 2023, and subsequent guidance has stressed voluntary participation and market incentives. This design aims to link ecological restoration with economic signals rather than relying only on command-and-control regulation. (moefcc-gcp.in)

Option A:
This option is incorrect because the programme is not limited to penalties; instead, it revolves around positive incentives in the form of tradable credits. While regulation remains important in environmental law, GCP specifically experiments with a market-based approach.

Option B:
Restricting participation to multinational corporations would undermine the programme’s emphasis on diverse stakeholders, including individuals, communities and domestic firms. Official documents explicitly mention a wide range of eligible actors.

Option C:
This option captures the core elements of the GCP: voluntary environmental actions, issuance of credits and tradability. It also highlights tree plantation on degraded land, which is one of the key activities envisaged. Because it aligns with official descriptions of the scheme’s intent and design, it is the correct answer.

Option D:
Financing only thermal power plants is not the focus of GCP; while decarbonisation of power is important, the programme is broader and not confined to a single sector. This statement therefore mischaracterises its scope.

Statements A, B and D are correct because they present both benefits and concerns related to large dams along with the need for due process. A notes potential advantages like irrigation and flood control, B recognises social and environmental costs such as displacement and submergence and D stresses the role of EIA and public hearings. Statement C is incorrect as dams alter river flows, sediment transport and aquatic habitats, affecting ecosystems and fisheries. Hence the correct combination is A, B and D only.

Option A:
Option A is incorrect because, although A and B are correct, it ignores D. Without acknowledging EIA and public hearings, the option fails to present the governance dimension of dam decisions, making it incomplete.

Option B:
Option B is correct as it combines all the true statements about the multifaceted impacts of large dams. It acknowledges benefits, costs and procedural safeguards while properly excluding C, which wrongly claims an absence of ecological impacts. This balanced view aligns with the unit’s treatment of the topic.

Option C:
Option C is incorrect because it includes B, C and D and accepts C as correct. Statement C denies ecological impacts that are widely documented in environmental studies, so its inclusion invalidates the combination despite the presence of B and D.

Option D:
Option D is incorrect as it groups A, C and D and leaves out B. It again accepts C, the incorrect statement, and neglects the important issue of displacement and land submergence discussed in B. Therefore, it cannot be chosen.

Upadhi is introduced to explain why an apparently universal relation between hetu and sadhya fails in some cases by revealing an unnoticed limiting condition. For example, the connection between smoke and fire holds only when certain conditions about fuel and ignition are met. Recognising the upadhi refines the vyapti so that it becomes genuinely exceptionless. Thus the restricting factor described in the stem is called upadhi.

Option A:
Option A is correct because upadhi literally means "subsidiary condition" and functions as a qualifier that saves genuine universals from overgeneralisation. It shows that the true vyapti is conditional upon the presence of this factor.

Option B:
Option B, udaharana, is the statement of rule with example and does not itself serve as a hidden constraint on the relation.

Option C:
Option C, paksha dharma, refers simply to a property present in the paksha and is not the special condition that limits the domain of a universal connection.

Option D:
Option D, samsaya, denotes doubt as a mental state and plays a role in prompting inquiry, not in technically restricting the scope of vyapti.

A Metropolitan Area Network spans a geographic region larger than a single building but smaller than a country, such as a city or a university campus. It often acts as a backbone that interconnects several local area networks. MANs can be implemented using high capacity fibre links and are sometimes managed by telecom providers. Therefore, the network described in the stem is a MAN.

Option A:
Option A is correct because MANs are defined in networking literature as covering metropolitan scale areas and linking multiple LANs, which matches the scope mentioned.

Option B:
Option B, LAN, is limited to smaller areas like offices or buildings and does not typically connect widely separated sites across a city.

Option C:
Option C, WAN, covers much larger geographic areas, often internationally, and would go beyond the scale indicated in the question.

Option D:
Option D, PAN, refers to very short range personal networks around an individual and is much smaller in scope than a MAN.

Statements A, B, C and E accurately identify sources of measurement error and strategies to reduce it. Poor wording and careless responding can both distort data, while standardised procedures and training investigators help make measurements more consistent. Statement D is false because measurement error directly undermines reliability by introducing random or systematic noise into scores. Therefore, the correct combination includes A, B, C and E but not D.

Option A:
Option A is correct because it includes the four statements that together show how errors arise and how they can be mitigated through design and training. It recognises that reliability depends on minimising such errors.

Option B:
Option B is incomplete as it excludes E, thereby neglecting the role of training in reducing interviewer or observer-related errors. Without E, the focus is limited to wording, respondent behaviour and standardisation but not human skill development.

Option C:
Option C is incorrect because it incorporates D, the claim that measurement error does not affect reliability. This directly contradicts the concept of reliability, which is weakened when error variance is high.

Option D:
Option D is wrong because it retains D and omits B, failing to highlight the impact of respondent carelessness on measurement quality while accepting a false statement about reliability. This leads to an inaccurate understanding of error sources and consequences.

Statements A, B, C and E are correct, while D and F are false. Causal reasoning does seek contributing factors, post hoc identifies a common fallacy based on mere sequence, and controlled comparison helps isolate causal variables. Exam questions often ask which explanation best accounts for observed facts, which is captured in E. D is wrong because temporal order alone does not prove causation, and F is wrong because correlation does not automatically establish a causal link. Thus A, B, C and E only is the correct combination.

Option A:
Option A is incomplete because it omits E, overlooking the way UGC NET uses cause and effect items to test evaluative skills. Although A, B and C are conceptually sound, they do not reflect this exam context. Hence A, B and C only cannot be chosen.

Option B:
Option B is incorrect because it drops A, failing to state what causal reasoning tries to do in general. Having only B, C and E leaves out the overall idea of causation itself. This omission makes the option conceptually weaker than the full set of correct statements.

Option C:
Option C is correct since it unites the description of causal inquiry, a classic fallacy, a methodological tool and the exam style of questioning. By excluding D and F, it also protects against common confusions between sequence, correlation and causation. Therefore this option fits both theory and practice.

Option D:
Option D is wrong because it includes D, which absurdly claims that temporal succession always suffices for causation, and omits C’s point about controlled comparison. Accepting D leads to many false causal attributions. So A, B, D and E only is not a valid answer.