UGC NET Questions (Paper – 1)

Binary 11001 can be converted to decimal by using positional weights 16, 8, 4, 2 and 1. The bits from left to right are 1, 1, 0, 0, 1. This gives 1×16 + 1×8 + 0×4 + 0×2 + 1×1 = 16 + 8 + 1 = 25. So the correct decimal equivalent is 25.

Option A:
Option A is correct because the sum of the active place values 16, 8 and 1 equals 25. The zeros in the 4's and 2's positions do not contribute to the total. This matches the binary pattern exactly.

Option B:
Option B gives 21, which would correspond to a different set of active bits, such as 10101₂. The given pattern 11001 has a different combination of ones and zeros, so 21 cannot be the right answer.

Option C:
Option C suggests 27, which would require additional contribution beyond 16 + 8 + 1. That would come from a nonzero 2's or 4's bit, which we do not have. Therefore 27 does not match the pattern.

Option D:
Option D gives 29, which is again larger than 25 and would require a different binary configuration. Since the 4's and 2's places are zero, extra value cannot appear in the sum.

NEP 2020 emphasises that teacher recruitment should be transparent and merit based, drawing on eligibility tests and demonstration lessons to assess both subject knowledge and pedagogical skills.

Option A:
Option A is incorrect because informal hiring based on personal contacts can undermine fairness, accountability and teacher quality.

Option B:
Option B is correct as it summarises the requirement for rule bound, publicly advertised and merit oriented recruitment processes.

Option C:
Option C is wrong since appointments based solely on political recommendations contradict the professionalisation of teaching.

Option D:
Option D is incorrect because handwriting speed alone is not a meaningful indicator of a teacher’s competence or understanding of the subject.

Option C – group discussion method The group discussion method centres around students working together to analyse issues, share ideas and solve problems. When the teacher structures tasks that require small groups to collaborate, negotiate meanings and reach conclusions, this method is being applied. Such activities promote higher-order thinking and communication skills rather than simple listening. Therefore, the classroom practice described in the stem is characteristic of the group discussion method.

Option A:
Option A, lecture method, is primarily teacher-centred, with the teacher talking and students mainly listening and taking notes. While occasional questions may be asked, the emphasis is not on students solving problems collaboratively in small groups. Thus, the lecture method does not match the scenario where group problem-solving is central.

Option B:
Option B, demonstration method, involves the teacher or a student showing a process or experiment while others observe. Although demonstrations can be interactive, they do not inherently require small-group problem-solving as a core feature. For that reason, demonstration method is not the best completion for this question.

Option C:
Option C, group discussion method, specifically refers to structured exchanges among students who work together on shared tasks. The description of students engaged in small-group problem-solving fits this method exactly, making it the correct option.

Option D:
Option D, dictation method, is largely concerned with students writing down what the teacher reads aloud, such as passages or notes. It is highly teacher-directed and offers few opportunities for cooperative problem-solving. Consequently, dictation method does not reflect the collaborative learning context indicated in the stem.

Statements A, B, D and F are correct because curriculum integration, campus initiatives, university-based research and online platforms all play recognised roles in strengthening environmental education at higher levels. Statement C is wrong, since excluding practical work undermines skill and attitude development, and E is wrong because partnerships with communities and local governments often make learning more applied and impactful. The only option that includes all and only the true statements is A, B, D and F.

Option A:
Option A is incorrect because it omits D and F, ignoring the contributions of university research and digital platforms to environmental education. While integration and campus initiatives are important, they do not fully represent higher education’s potential without these additional avenues.

Option B:
Option B is correct as it recognises multiple pillars of environmental learning in higher education and excludes the statements that either marginalise practice or dismiss partnerships. It reflects the holistic approach recommended for universities seeking to promote sustainability.

Option C:
Option C is incorrect since it accepts C, which restricts environmental education to theory, even though practical projects and fieldwork are core components of effective teaching in this domain. Including C therefore makes the combination inconsistent with pedagogical best practices.

Option D:
Option D is incorrect because it includes E, which wrongly claims partnerships are irrelevant, and omits A, which describes curricular integration. This combination underplays both the academic and outreach dimensions of environmental education.

Statements A, B, C, D and F are correct, covering disease patterns, heat stress, food security, mental health and the role of health systems in adaptation. Statement E is false because climate change can affect occupational health through heat stress, extreme weather and air quality, thereby influencing productivity. The combination that includes A, B, C, D and F while excluding E is therefore correct.

Option A:
Option A is incorrect because it omits F, ignoring the crucial role of resilient health systems and surveillance in managing climate-sensitive diseases and impacts.

Option B:
Option B is correct as it presents a broad and accurate view of health dimensions of climate change and highlights system-level adaptation measures while rejecting the idea that occupational health is unaffected.

Option C:
Option C is incorrect since it includes E, which denies occupational impacts, even though heat and outdoor work conditions are well-known channels of risk.

Option D:
Option D is incorrect as it leaves out B and thus fails to mention the very prominent health risk from increasing heatwaves, which is central in climate–health discussions.

NEP 2020 recommends a flexible four-year UG programme that is multidisciplinary in nature. Students take courses across many fields and those completing four years can pursue a research project or thesis, combining breadth with depth.

Option A:
Limiting students to one narrow subject for four years goes against NEP’s push for broad-based, liberal and multidisciplinary education.

Option B:
This option correctly highlights both the multidisciplinary coursework and the research opportunity in the fourth year described in NEP 2020.

Option C:
Vocational elements are supposed to be integrated, not banned, so that degrees remain relevant to work and life.

Option D:
The policy explicitly values campus-based experiences; the four-year degree is not restricted to distance mode.

Statements A, B and D correctly depict gender equity initiatives. Sensitisation challenges stereotypes, Internal Complaints Committees handle harassment cases according to law and inclusive policies respond to the needs of all genders through facilities and support. Statements C, E and F are false because co-educational institutions also require gender initiatives, awareness directly contributes to safety and policies do not replace the duty to act on specific complaints.

Option A:
Option A is incorrect because it leaves out D, thereby neglecting the infrastructural and support dimensions of gender equity related to hostels and sanitation.

Option B:
Option B is correct as it combines A, B and D, the three true statements about education, redressal mechanisms and inclusive facilities, while excluding C, E and F, which trivialise or restrict gender initiatives.

Option C:
Option C is incorrect since it brings in E, which disconnects awareness from safety, and omits A, thus weakening the emphasis on changing attitudes and behaviours.

Option D:
Option D is incorrect because it includes C, which restricts gender equity to women’s colleges only, and therefore misrepresents regulatory and ethical expectations for all institutions.

Statements A, B and D are correct, whereas C and E are incorrect. A is true because broadcast programmes can reinforce and extend classroom content. B is true as campaigns and programmes raise awareness about issues like health and literacy. D is true since critical viewing activities help students analyse messages. C is false because exposure does not automatically translate into behaviour change, and E is false because mass media are widely used in distance and open learning. Hence, A, B and D only is the correct combination.

Option A:
Option A lists A and B only, omitting D and thereby ignoring the teacher’s role in fostering critical evaluation of media. Since critical engagement is important in education, A and B only is incomplete.

Option B:
Option B gathers A, B and D, capturing supplementation, awareness and critical analysis while excluding C and E, which overstate effects or deny the role of media in open learning. Because it includes all and only the true statements, this option is correct.

Option C:
Option C groups B, D and E, but E incorrectly claims that mass media have no role in distance systems, contradicting practice. Including E makes B, D and E only invalid.

Option D:
Option D joins A, C and D, but C is false because educational messages do not guarantee change. As a result, A, C and D only cannot be accepted.

Initially, alcohol = (5/12) × 72 = 30 litres and water = (7/12) × 72 = 42 litres. Let x litres of water be added. Alcohol remains 30 litres, water becomes 42 + x and the new ratio is 30:(42 + x) = 5:9. Cross-multiplying gives 30 × 9 = 5(42 + x), so 270 = 210 + 5x, which leads to 5x = 60 and x = 12. Thus, 12 litres of water must be added.

Option A:
Option A, 9 litres, gives water = 51 litres and alcohol = 30 litres, yielding a ratio 30:51 which simplifies to 10:17, not 5:9. Hence, 9 litres is insufficient to reach the required proportion of water to alcohol.

Option B:
Option B, 10 litres, leads to water = 52 litres and a ratio 30:52, which reduces to 15:26. This is still not 5:9, indicating that 10 litres does not adjust the mixture to the desired composition.

Option C:
Option C, 11 litres, produces water = 53 litres and a ratio 30:53 which does not simplify to 5:9. Therefore, it also fails to create the target ratio between alcohol and water.

Option D:
Option D is correct because with water increased to 54 litres, the ratio becomes 30:54, which simplifies to 5:9 when both terms are divided by 6. This exactly matches the condition specified in the problem.

Synchronous e-learning occurs when participants engage in learning activities at the same time, even though they may be at different locations. Tools like video conferencing, live chats and virtual classrooms enable this real-time interaction. These sessions allow immediate feedback, questioning and clarification. Therefore live online classes conducted via conferencing platforms are examples of synchronous e-learning.

Option A:
Option A, asynchronous, refers to learning activities where participants access materials at different times, such as recorded lectures or discussion forums. Such formats do not require simultaneous presence and so do not match the real-time scenario described.

Option B:
Option B is correct because the defining feature of synchronous learning is simultaneity of participation. Live video sessions embody this feature by bringing teachers and students together at the same moment over the network.

Option C:
Option C, blended, combines face-to-face and online components but may include both synchronous and asynchronous parts. The stem specifically emphasises real-time online interaction, not the mixture of modes.

Option D:
Option D, self paced, emphasises learner control over timing and typically aligns more with asynchronous approaches where learners progress independently. It does not require real-time sessions.

Statements A, B and D are correct, whereas C is incorrect. A is true because immediacy behaviours such as addressing students by name and showing interest can strengthen their sense of belonging. B is true since feeling close to the teacher often encourages students to ask questions and contribute. D is true as immediacy includes verbal actions like praise and non-verbal cues such as eye contact and open posture. C is false because aloof and distant behaviour generally reduces, rather than increases, student motivation.

Option A:
Option A is incorrect because it contains only A and B and omits D, failing to mention that both verbal and non-verbal actions form part of immediacy. Without D, the description of immediacy is incomplete. Therefore A and B only cannot be the correct answer.

Option B:
Option B is incorrect because it groups B and D only and leaves out A, overlooking the broader impact of immediacy on students’ sense of belonging to the class. Since A is also correct, B and D only is not a full representation of the concept.

Option C:
Option C is correct because it brings together A, B and D, the three statements that accurately connect teacher immediacy with student motivation and participation. It explicitly rejects C, which wrongly suggests that distance and aloofness raise motivation. Hence this option best matches the set of correct statements.

Option D:
Option D is incorrect because it treats all four statements as correct, including C. Since C promotes a view contrary to research on teacher immediacy, the presence of this false statement invalidates the combination.

In this series, the first letters are A, E, I, M, which correspond to positions 1, 5, 9 and 13, all increasing by 4. The second letters are D, H, L, P, i.e. positions 4, 8, 12 and 16, also increasing by 4. The next first letter after M (13) is Q (17) and the next second letter after P (16) is T (20). Hence QT is the only pair that continues the uniform +4 progression in both positions.

Option A:
Option A, QS, provides the correct first letter Q but gives S as the second letter, which is only 3 steps ahead of P. The series demands a constant increase of 4 positions for the second letter as well. Since S is inconsistent with the established step size, this option disrupts the pattern and is therefore incorrect.

Option B:
Option B is correct because Q and T are exactly 4 positions ahead of M and P respectively. This keeps the uniform step size intact for both components of the pair. By preserving the same arithmetic structure as in all previous terms, QT is the only option that maintains strict logical continuity in the series.

Option C:
Option C, QU, pushes the second letter forward to U, which is 5 positions after P. This overshoots the fixed increment and changes the rule mid-series. Since the first and second letters must follow the same step of +4, QU cannot be considered a valid continuation.

Option D:
Option D, QV, again uses the correct first letter Q but moves the second letter to V, which is 6 positions ahead of P. This introduces a larger increment than used before, breaking the constant-difference pattern that defines the sequence. Therefore option D does not fit the series.

Statements A, B, D and E are correct, whereas C and F are false. A and B correctly describe the distribution of subject and predicate in universal forms, and D correctly notes that O distributes only the predicate. E is right that A and O are contradictories in the traditional square. C is wrong because I distributes neither term, and F is wrong because modern (Boolean) logic does not usually treat universal statements as existentially loaded. Hence A, B, D and E only is the correct combination.

Option A:
Option A is incomplete because it omits E, which correctly identifies the contradictory relation between A and O. Although A, B and D are true about distribution, leaving out E makes the description of categorical relations less complete. Therefore A, B and D only cannot be accepted as the full set of correct statements.

Option B:
Option B is incorrect as it omits D and claims only A, B and E are correct. While A, B and E are true, ignoring the distribution property of O propositions means one correct statement is missing. As a result, this option does not capture all the true statements given.

Option C:
Option C is wrong because it does not include A and instead accepts B, D and E only. Omitting A removes the basic rule for distribution in A statements. Since A is clearly correct, any option that leaves it out fails to represent the entire set of true statements.

Option D:
Option D is correct because it groups A, B, D and E, all of which align with traditional categorical logic and the square of opposition. It excludes C, which overstates I’s distribution, and F, which misrepresents modern logic’s stance on existential import. Thus this option exactly matches the set of correct statements.

Statements A, B and D are correct, whereas C is incorrect. A is true because students’ perceptions of clarity and engagement provide valuable feedback for teachers. B is true since studying who speaks, for how long and in what patterns helps refine interaction strategies. D is true as peers can observe communication behaviours that the teacher may not notice. C is false because focusing only on exam scores ignores key process indicators of effective teaching, including communication quality.

Option A:
Option A groups A and B only and omits D, overlooking the role of peer observation in providing structured feedback on communication. Without D, the evaluation framework is narrower than it should be. Therefore A and B only cannot be accepted.

Option B:
Option B includes B and D only and leaves out A, ignoring the direct voice of students regarding clarity and effectiveness. Since A is also a correct statement, B and D only does not capture all relevant evidence sources. Hence this option is incomplete.

Option C:
Option C brings together A and D only but omits B, missing the analytical dimension of classroom interaction patterns. Because B is correct, A and D only does not present the full set of accurate statements. Thus it is not valid.

Option D:
Option D combines A, B and D and excludes C, which wrongly discounts communication evidence in teaching evaluation. This option recognises student feedback, interaction analysis and peer observation as complementary sources. As it contains all and only the correct statements, A, B and D only is the right answer.

Biochemical Oxygen Demand measures the amount of dissolved oxygen required by microorganisms to decompose organic matter in water. A high BOD value means that microbial activity will consume large amounts of oxygen, which can deplete DO levels and stress aquatic life. Such conditions are typical of water polluted with sewage or other organic wastes. Therefore, a high BOD value indicates high biodegradable organic load and probable pollution, making Option B correct.

Option A:
Option A is incorrect because very clean water with low organic pollution would show low BOD values. High BOD is a sign of high organic content, not cleanliness.

Option B:
Option B is correct as it links high BOD to high organic matter and likely pollution. This interpretation underlies regulatory standards for effluent discharge and river water quality classification.

Option C:
Option C is incorrect since the presence of organic matter and high BOD implies active microbial populations, not their absence. Microorganisms are responsible for consuming oxygen as they break down waste.

Option D:
Option D is incorrect because chemically pure drinking water should have low BOD, indicating minimal organic contamination. High BOD water generally requires treatment before it is safe to drink.