UGC NET Questions (Paper – 1)

The median is the middle value of an ordered distribution such that half of the observations fall below it and half above it. It is particularly useful for skewed distributions or data with extreme values, because it is less affected by outliers than the mean. For ordinal data, the median is often the most appropriate measure of central tendency. Therefore, the measure that divides the distribution into two equal halves is correctly called the median.

Option A:
The mean is the arithmetic average obtained by summing all scores and dividing by the number of observations. While widely used, it is sensitive to extreme values and does not necessarily separate the distribution into two equal halves. Hence, mean is not the correct measure described in the stem.

Option B:
The mode is the value that occurs most frequently in a distribution and can be used for nominal, ordinal or interval data. A distribution may have multiple modes or none clearly defined, and the mode does not guarantee that 50% of cases lie above and 50% below. Thus, mode is not the best completion.

Option C:
Standard deviation measures the average deviation of scores from the mean and expresses the spread or variability in the data, not its central location. It does not divide the distribution into equal halves and therefore does not fit the description given in the question.

Option D:
The median’s reliance on the positional middle of ordered scores, rather than on mathematical averaging, ensures that it always splits the distribution into two equal parts, which matches the stem exactly.

Eutrophication occurs when excess nutrients, especially nitrates and phosphates, enter a water body. These nutrients stimulate dense growth of algae and aquatic plants, creating algal blooms. When the algae die and decompose, oxygen in the water is depleted, often leading to fish mortality. Thus, algal blooms followed by fish kills are characteristic signs of eutrophication.

Option A:
Option A is incorrect because eutrophication produces excessive algae, not their sudden disappearance. Clear water usually indicates low nutrient levels.

Option B:
Option B is correct as it clearly links nutrient enrichment, algal growth and oxygen depletion. This sequence is widely documented in polluted lakes and reservoirs.

Option C:
Option C is incorrect since crystal-clear water with low biological activity suggests oligotrophic conditions, not eutrophication. Such lakes are nutrient-poor, not nutrient-rich.

Option D:
Option D is incorrect; lakes do not rapidly become deserts due to eutrophication. They may become choked with plants and lose fish, but water remains present.

Statistical power quantifies the sensitivity of a test to identify real effects when they exist. It is mathematically equal to one minus beta, where beta is the probability of a Type II error. High power means that the test is unlikely to miss true differences or relationships. Therefore, the probability described in the stem is called the power of the test.

Option A:
Precision refers to how close repeated estimates are to one another, such as narrow confidence intervals, but it is not the standard term for the probability of detecting true effects.

Option B:
Power is influenced by factors such as sample size, effect size, significance level and variability in the data. Researchers often conduct power analyses while designing studies to ensure that they have a reasonable chance of finding meaningful effects. This focus on correctly rejecting false null hypotheses matches the stem, making this option correct.

Option C:
Reliability concerns the consistency of measurements over time or across items and is a property of instruments, not directly of hypothesis tests.

Option D:
Validity relates to the appropriateness of inferences drawn from test scores or study designs; it does not specifically denote the probability of detecting true effects in statistical testing.

Upamāna is the means of knowing the relation between a word and its object through similarity or comparison. The classic case is where someone hears “a gavaya is like a cow but lives in the forest,” and later on seeing such an animal, recognises “this is a gavaya.” The cognition depends on comparing the new object with the known cow and linking it to the word. This process is neither mere testimony nor ordinary inference.

Option A:
Option A is a case of inference from smoke to fire and does not involve learning a new word’s reference by comparison.

Option B:
Option B correctly captures the gavaya example where similarity between the seen animal and a cow enables identification through upamāna.

Option C:
Option C exemplifies śabda pramāṇa, where scripture gives knowledge through verbal testimony, not through comparison.

Option D:
Option D is an instance of memory, which recalls a past event rather than generating new word–object knowledge via similarity.

Statements A, B, C, E and F present core features of distance and open learning systems. A is true because separation in space or time defines distance modes. B is true since tutorials, assignments and counselling support learners. C is true as self-instructional materials are central resources, E is true because flexibility of pace and place is a major strength, and F is true as distance education particularly serves adults and working persons. D is false because modern distance education uses ICT tools extensively; hence A, B, C, E and F only is the correct combination.

Option A:
Option A omits F, failing to mention the key target group of adult and working learners who benefit from distance education. As F is also correct, A, B, C and E only is incomplete.

Option B:
Option B includes A, B, C, E and F, giving a comprehensive description of how distance and open learning function to support learners flexibly. By excluding D, which denies the use of ICT, it contains all and only the true statements and is therefore correct.

Option C:
Option C incorporates D, which wrongly claims that ICT is never used for interaction, even though audio, video and online tools are common. The presence of D makes B, C, D, E and F only an invalid option.

Option D:
Option D leaves out B and includes only A, C, E and F, overlooking the importance of support services like tutorials and counselling. Because it omits a key correct statement, A, C, E and F only cannot be accepted as the best answer.

Action research is conducted by practitioners such as teachers or administrators who systematically inquire into their own practice to bring about improvement. It typically involves repeated cycles of planning an intervention, acting by implementing it, observing the outcomes and reflecting on the results before planning the next cycle. This close link between inquiry and action makes the research highly context-specific and directly relevant to practice. Because the stem describes a cyclic process of plan, act, observe and reflect to improve practice, action research is the correct term.

Option A:
Basic research aims to develop or refine theory without a specific focus on immediate practical change in a local setting. It is usually carried out by researchers rather than by front-line practitioners, so it does not match the cyclic, practitioner-centred process described in the stem.

Option B:
Action research empowers practitioners to become researchers of their own contexts, fostering reflective practice and ongoing professional development. Each cycle generates insights that can be quickly applied and tested again, which aligns perfectly with the stem’s emphasis on continuous improvement.

Option C:
Survey research collects data from samples using questionnaires or interviews to describe trends, attitudes or relationships at a broader level. It does not inherently involve cycles of action and reflection aimed at improving the researcher’s own practice, so survey research is not suitable here.

Option D:
Historical research analyses past events and trends using documents and records to understand how current conditions developed. It is not organised as a cyclical intervention process in the present, so historical research cannot complete the stem correctly.

ICT in education covers the entire cycle of academic activity, from preparing digital materials to delivering them and assessing learning. It enables teachers to create multimedia content, share it through networks and receive student responses. It also helps in recording, analysing and reporting performance data. Therefore, this option reflects the broad academic scope of ICT rather than a narrow or casual use.

Option A:
This option describes ICT as a comprehensive academic support system that connects content, communication and evaluation. It recognises that the same technological infrastructure serves teachers, students and administrators. Because it highlights multiple core functions in education, it is the most accurate statement.

Option B:
Using ICT only for decoration ignores its instructional and administrative potential. Flashy gadgets without proper integration into pedagogy do not represent the true scope of ICT in higher education.

Option C:
Restricting ICT to festival greetings reduces powerful academic tools to purely social exchanges. Such a limited use does not justify investments in educational technology.

Option D:
Playing background music may use electronic devices, but it does not engage ICT for structured learning or assessment. Hence, this option misses the real educational role of ICT.

Statements A, B and E are correct, whereas C, D and F are wrong and therefore form the correct set of wrong statements. Rumours do travel through informal networks, grapevine talk often mixes facts and assumptions, and its patterns can reveal organisational climate. Saying administrators should always ignore informal messages, that all informal talk can be eliminated, or that students never join grapevine communication is unrealistic. Thus the wrong statements are precisely C, D and F.

Option A:
Option A is incorrect because it marks C only as wrong and overlooks D and F, which also seriously misrepresent informal communication. It underestimates how unrealistic it is to eliminate all informal talk or to assume students are not involved. Therefore C only cannot be accepted as the full set of wrong statements.

Option B:
Option B is still incomplete as it identifies C and D only and omits F. Students often participate in grapevine exchanges, so claiming they never do is also a wrong statement. By failing to include F, C and D only does not cover all the incorrect statements provided.

Option C:
Option C is correct because it groups C, D and F, the three statements that deny the pervasiveness and complexity of informal networks. It correctly leaves A, B and E as accurate descriptions of how rumours and grapevine function. For this reason C, D and F only is the right answer.

Option D:
Option D is wrong as it adds B, a true statement about the mixed nature of grapevine messages, to the wrong set. B accurately recognises that grapevine information often combines facts and guesses. Including B among wrong statements creates a logically inconsistent option.

In learner-centred teaching, the focus shifts from what the teacher does to what the learners do. The teacher arranges learning experiences and resources so that students actively construct knowledge. Acting as a facilitator means guiding, supporting and scaffolding learners rather than dominating the interaction. Hence, facilitator is the most appropriate description of the teacher’s role in learner-centred classrooms.

Option A:
A controller exercises tight authority over every classroom activity and decision. This style tends to limit student autonomy, exploration and participation. Such a role is more typical of teacher-centred teaching than of learner-centred classrooms.

Option B:
An evaluator is primarily concerned with judging or grading students’ performance. While assessment is part of teaching, making it the predominant role overlooks planning, guiding and supporting learning. In learner-centred settings, evaluation is integrated but not the teacher’s sole identity.

Option C:
A facilitator helps learners take responsibility for their own learning by offering guidance, feedback and appropriate challenges. This role allows students to explore, discuss and collaborate while the teacher monitors progress. Therefore, facilitator accurately captures the teacher’s predominant role in learner-centred classrooms.

Option D:
A strict disciplinarian focuses mainly on maintaining order and enforcing rules. Excessive emphasis on discipline can suppress open communication and experimentation. Consequently, this role does not reflect the supportive, guiding stance needed in learner-centred pedagogy.

Surveys indicate that large majorities in multiple countries favour protecting at least 30% of land and sea by 2030. This suggests that political resistance may come more from specific interest groups or short-term concerns than from general public opposition. At the same time, respondents often stress fairness and the need for wealthier countries to shoulder more financial responsibility. Policy-makers can therefore build on this support to design equitable conservation strategies that align with people’s sense of justice. (The Guardian)

Option A:
This option is incorrect because the survey evidence shows broad support, not strong resistance, to expanding protected areas. Public opinion can be a facilitator rather than a barrier.

Option B:
This option is wrong since many respondents actually favour shared responsibility and greater support from wealthier nations for conservation in biodiversity-rich regions.

Option C:
This option correctly interprets the findings as an opportunity to pursue ambitious conservation policies grounded in equity. It highlights that public backing is conditional on fairness and adequate finance.

Option D:
The 30×30 goal covers both land and sea; public support is not restricted only to oceans. Surveys examine attitudes to protecting nature in a broad sense.

Statements A, B and C correctly explain the concepts of hypertext, multimedia and hypermedia, while D contradicts the core idea of user choice. Hypertext systems are specifically designed to give users freedom to follow different links and paths. Hypermedia extends this by combining linking with multimedia components for richer experiences. Thus, the statements A, B and C together form the correct set.

Option A:
Option A is correct because it includes all three true statements and excludes D, which misrepresents hypertext as strictly linear. It portrays how linking and media integration support exploratory learning in ICT environments.

Option B:
Option B is incorrect because it lists only A and C as correct and omits B. Since multimedia elements are central to hypermedia, understanding their combination with hypertext requires acknowledging B as well.

Option C:
Option C is incorrect because it includes B, C and D and therefore accepts D. While B and C are true, D wrongly claims that hypertext enforces a single sequence, so this combination cannot be accepted.

Option D:
Option D is incorrect because it treats all four statements as correct, implicitly validating D. Accepting a statement that denies user choice in hypertext contradicts standard definitions of hypertext and hypermedia.

NEP 2020 positions CPD as continuous, with around 50 hours per year. It encourages flexible formats, including school based communities, online modules and structured workshops. This mix allows teachers in varied locations to upgrade their skills regularly.

Option A:
Conducting CPD only once at induction contradicts the idea that teaching demands lifelong learning. NEP explicitly calls for repeated opportunities, so this option is incorrect.

Option B:
This option captures the emphasis on blended, accessible professional learning tailored to teacher needs. It reflects the policy guidance and is the correct description.

Option C:
Reducing CPD to high-stakes exams would create anxiety and not necessarily improve practice. NEP focuses on supportive, developmental modes, not just testing.

Option D:
Restricting CPD to urban elite schools would worsen inequalities. NEP wants every teacher in all regions to have development opportunities, so this option is not aligned.

RAM (Random Access Memory) is the volatile main memory that temporarily stores data and instructions while programs are running. It provides fast access for the CPU during execution, and its contents are lost when power is switched off. Therefore, the volatile execution memory described in the stem is RAM.

Option A:
Option A is correct because RAM is defined as volatile primary memory used for active processing, storing currently running programs and data for quick CPU access. The description of temporary storage during execution matches RAM precisely.

Option B:
Option B, optical disc, is a secondary storage medium such as CD or DVD that retains data even when power is off and is not suitable for rapid CPU execution.

Option C:
Option C, USB flash drive, is also non-volatile secondary storage used for data transfer and backup rather than active program execution.

Option D:
Option D, magnetic tape, is a sequential access storage used mainly for archival backup and is far too slow to function as primary execution memory.

To find the arithmetic mean, we add all the numbers and divide by how many numbers there are. Here, 4 + 6 + 8 + 10 = 28 and there are 4 observations. Dividing 28 by 4 gives 7. Therefore, the arithmetic mean of the given data set is 7.

Option A:
Option A is correct because it follows directly from the formula mean = sum of observations ÷ number of observations. The computation 28 ÷ 4 is straightforward and yields 7 exactly. In aptitude tests, performing such calculations accurately and quickly is crucial to managing time. Thus, 7 correctly represents the central value of the data.

Option B:
If we choose 8, we would be assuming that the average is equal to one of the larger values in the set, but the computation shows otherwise. Although 8 is close to the centre of the range, it does not equal the exact mean 7. Therefore, option B overestimates the average value.

Option C:
A mean of 6 would require that the total sum be 24, because 24 ÷ 4 = 6, but the actual sum is 28. This indicates that 6 is too low compared to the true average. Hence, this option does not match the correct calculation.

Option D:
A mean of 9 would imply a total sum of 36 for four values, which is much higher than the actual sum. Since the numbers lie between 4 and 10, an average as high as 9 is not consistent with the contributions of the smaller values. Therefore, this option is incorrect.

In a cap and trade system, the government sets an overall “cap” on allowable emissions and allocates or auctions permits that add up to this cap. Firms that can reduce emissions cheaply may sell surplus permits to others,creating a market price for pollution. The stem describes this type of system with a limit and tradable permits,so the missing word is cap. Hence Option C is correct.

Option A:
Tax and trade is not a standard phrase. Pollution taxes operate differently by charging a fee per unit of emissions rather than fixing a quantity cap and allowing trading within that cap.

Option B:
An offset typically refers to a project or activity that compensates for emissions made elsewhere,for example through tree planting. While offsets can sometimes be linked to trading schemes,they are not the defining word in the cap and trade expression.

Option C:
Cap emphasises that the total quantity of emissions is limited to a specified level,ensuring an environmental outcome. Trading then allows flexibility in how reductions are distributed. This two part mechanism is exactly what the question refers to.

Option D:
Ratio and trade is not a recognised policy term in environmental economics. It would not convey the core idea of a fixed overall limit on emissions,so it is not an appropriate answer.