UGC NET Questions (Paper – 1)

Acid rain forms when sulphur dioxide and nitrogen oxides react with water vapour and other chemicals in the atmosphere to produce sulphuric and nitric acids. These acids then fall to the ground with rain, snow or dust. Because the stem mentions burning fossil fuels and industrial processes,the combination of sulphur dioxide and nitrogen oxides best explains the phenomenon.

Option A:
Carbon monoxide and ozone are important air pollutants, but they do not directly form strong acids responsible for acid rain. Carbon monoxide mainly affects human health, and tropospheric ozone is a component of photochemical smog. Therefore this pair does not match the primary chemical cause described.

Option B:
Sulphur dioxide and nitrogen oxides are released in large quantities from coal based power plants, industrial boilers and vehicles. Once in the atmosphere, they undergo oxidation and acid formation, leading to acid deposition. This clearly aligns with the explanation of acid rain in the question.

Option C:
Methane and ammonia can participate in atmospheric chemistry and contribute to other environmental issues such as eutrophication and greenhouse effects. However, they are not the principal precursors of acid rain in most contexts. Hence this option is not correct.

Option D:
Chlorofluorocarbons are associated mainly with ozone layer depletion, and helium is a chemically inert gas. Neither plays a significant role in generating acid rain, so this pair is inappropriate for the stem.

Statements A, B and D accurately capture autonomy and governance reforms for colleges. A is true because academic autonomy allows colleges to tailor curricula and evaluations within regulatory frameworks. B is correct since autonomy is intended to foster innovation suited to local and regional needs. D is also true as NEP 2020 explicitly proposes graded autonomy and the evolution of colleges into degree-granting institutions. Statement C is false because autonomous colleges remain subject to accreditation and regulatory oversight. Thus, A, B and D only form the correct combination.

Option A:
Option A is correct because it gathers all the true statements about the goals and policy direction of college autonomy and excludes C, which wrongly suggests complete regulatory exemption. It reflects both flexibility and accountability.

Option B:
Option B is incorrect because it lists only A and B and omits D, thereby ignoring the explicit policy push in NEP 2020 towards graded autonomy. Without D, the policy context is incomplete.

Option C:
Option C is incorrect because it combines B and D only and leaves out A, which explains how academic autonomy operates in practice through curriculum and evaluation design.

Option D:
Option D is incorrect because it treats all four statements as correct, thereby accepting C’s claim that autonomy removes accreditation and regulatory review. This contradicts the principle of autonomous yet accountable institutions.

In partnership problems, the profit is divided in the ratio of capital multiplied by time. Taking capitals as 3k, 5k and 7k for A, B and C and times as 2, 4 and 6 years, their effective investments are 3k × 2 = 6k, 5k × 4 = 20k and 7k × 6 = 42k. The ratio 6:20:42 simplifies to 3:10:21. The sum of these parts is 34, so B’s share is (10/34) of ₹1,36,000, which equals ₹40,000.

Option A:
Option A is correct because the calculation (10/34) × 1,36,000 gives exactly ₹40,000, and using 3/34 and 21/34 for A and C yields the remaining profit. The three shares add up neatly to ₹1,36,000, confirming that the ratio of effective investments has been applied correctly. Hence, ₹40,000 accurately represents B’s entitlement.

Option B:
Option B, ₹38,000, would not correspond to the fraction 10/34 of the total profit. If we assign ₹38,000 to B, the remaining amount for A and C would not then be divisible in the ratio 3:21 without leaving a remainder or altering the initial capital-time structure. Therefore, ₹38,000 is inconsistent with the proportional rule.

Option C:
Option C, ₹48,000, would represent a larger share than warranted by the 10 parts out of 34. Using ₹48,000 for B implies that B’s effective contribution outweighs that of C more than the 10:21 ratio allows. This contradicts the original investment-time data, so ₹48,000 cannot be correct.

Option D:
Option D, ₹52,000, is even higher and would require B’s share to be close to or greater than C’s share, which is not supported by the ratio 3:10:21. The necessary rebalancing of the remaining profit would distort the intended proportions. As a result, ₹52,000 does not match the proportional distribution.

The Environmental Kuznets Curve proposes an inverted U-shaped relationship between some measures of environmental degradation and per capita income. At low income levels, pollution tends to rise with industrialisation and lack of regulation. After a threshold income, societies may demand cleaner environments and invest in efficient technologies, leading to declining pollution levels. Thus, the hypothesis suggests that degradation first increases and then decreases with rising income, which is captured in Option B.

Option A:
Option A is incorrect because it assumes a simple continuous decline in degradation with rising income, ignoring the initial phase of industrial growth where pollution usually increases.

Option B:
Option B is correct since it reflects the characteristic inverted U shape, with a turning point at some intermediate income level. It aligns with the original formulation of the EKC hypothesis used in environment and development debates.

Option C:
Option C is incorrect as it states that income and degradation are completely unrelated. Empirical studies show that economic activity strongly influences environmental pressure, even if the exact EKC pattern may not hold for all pollutants.

Option D:
Option D is incorrect because it implies that degradation always increases with income and never improves. This contradicts the EKC idea and ignores evidence of environmental improvements in some high-income countries.

Statements A, B and D are correct because a worthwhile problem is significant, feasible and aligned with the researcher's competence and interest. These features ensure that the study can be completed and can contribute meaningfully to the field. Statement C is false because no research problem can guarantee positive or entirely novel findings in advance. Statement E is also false; problems are chosen precisely because they are not fully solved. Option A alone includes all and only the correct statements.

Option A:
Option A is correct because it captures the three essential criteria of significance, feasibility and researcher–problem fit, while excluding the unrealistic requirements in C and E. It recognises that a sound problem does not need guaranteed outcomes or prior full solution.

Option B:
Option B is incomplete because it omits D, ignoring the importance of the researcher's interest and competence for sustained engagement with the study. Without considering competence, the feasibility of actually executing the project is reduced.

Option C:
Option C is incorrect because it includes E, which wrongly suggests that fully solved problems are suitable choices, and omits A, which emphasises significance for the field. Including a false statement and excluding a true one makes this combination invalid.

Option D:
Option D includes C, which claims that a problem must guarantee positive and novel results; this is unrealistic and contrary to the nature of inquiry. Although it also contains some true statements, the presence of C means the option cannot be correct.

NEP 2020 recommends that common entrance tests be offered in multiple Indian languages as well as English so that students educated through different media are not disadvantaged.

Option A:
Option A is incorrect because offering tests only in English would go against the policy’s emphasis on multilingualism and equity.

Option B:
Option B is correct as it captures the idea of providing the same examination in several Indian languages and English to ensure fair access.

Option C:
Option C is wrong since restricting tests to foreign languages is neither practical nor aligned with the promotion of Indian languages.

Option D:
Option D is incorrect because intentionally using only technical symbols and making tests linguistically inaccessible would undermine fair assessment.

Statements A, B, D and F correctly describe constructive industry collaboration. A is true because industry feedback helps align curricula with labour market needs. B is true as structured internships and apprenticeships build practical skills. D is true since joint projects expose students to authentic work environments. F is true because placement cells manage relationships with recruiters and coordinate campus drives. C is false because academic standards must be set jointly within academic frameworks, and E is false because faculty must be central partners in curriculum design.

Option A:
Option A is incorrect because it omits F and thus fails to mention the operational role of placement cells in sustaining industry linkages.

Option B:
Option B is incorrect because it includes E, which seeks to exclude faculty from curriculum decisions, contradicting academic responsibility.

Option C:
Option C is correct as it groups A, B, D and F, the four true statements about collaborative curriculum design, work experience and placement support, while excluding C and E, which overstate employer control and marginalise faculty.

Option D:
Option D is incorrect because it includes C, which wrongly hands over all decisions on academic standards solely to employers.

Anvayavyatireki anumāna employs both positive and negative instances to establish vyāpti. For smoke and fire we observe places with smoke that have fire and places without fire that have no smoke. This dual pattern strengthens the connection and makes smoke a reliable sign of fire. The hill example is therefore the standard anvayavyatireki illustration in Nyāya logic.

Option A:
Option A matches the textbook case where both co presence and co absence of smoke and fire are used to ground the inference.

Option B:
Option B is the kevalānvayi example based only on positive knowable–nameable instances.

Option C:
Option C is a more abstract metaphysical case and is often discussed under kevalavyatireki rather than anvayavyatireki.

Option D:
Option D likewise belongs to a different pattern and is not the simple everyday example used to teach anvayavyatireki.

After the ban took effect, central and state authorities coordinated a special enforcement campaign throughout July 2022. Officials inspected retailers, wholesalers and manufacturers to check for banned items and raised awareness among consumers and traders. Combining enforcement with communication helped translate legal rules into actual shifts in market behaviour.

Option A:
This option is incorrect because the government did not close all plastic units; many continue to operate legally with compliant products.

Option B:
This option correctly describes the targeted enforcement and outreach strategy used to operationalise the ban across the country.

Option C:
Existing plastic-waste rules were not abolished; the ban builds on that regulatory framework.

Option D:
The ban applies nationally, not just to coastal states; litter and mismanaged plastic occur in inland regions as well.

The Pygmalion effect,also known as self-fulfilling prophecy,occurs when higher expectations from a teacher lead to improved performance in students. Positive cues,extra attention and challenging tasks are given,raising achievement. The stem describes this phenomenon directly,so Pygmalion effect is the correct term.

Option A:
Hawthorne effect refers to changes in behaviour when people know they are being observed,not specifically to expectation-driven performance changes.

Option B:
Testing effect is related to improved retention due to retrieval practice,which is different from expectancy influences.

Option C:
Contrast effect involves comparative judgements between individuals,not expectation-based improvement.

Option D:
Pygmalion effect highlights the power of teacher beliefs in shaping outcomes,making option B appropriate.

In this question statements A, B and C accurately describe basic, applied and action research. Statement A is true because basic research is aimed at theory building and generating general principles. Statement B is correct as applied research seeks solutions to specific practical problems, and statement C rightly highlights that action research is conducted by practitioners to improve their own practice. Statements D and E are wrong: D wrongly claims that action research is only about theory without concern for practice, and E incorrectly suggests that basic research is always less rigorous than action research, so the set of wrong statements is precisely D and E.

Option A:
Option A identifies only statement D as wrong and ignores statement E. While it is correct that statement D misrepresents the practice-oriented nature of action research, statement E is also incorrect because basic research can be highly rigorous in its methodology. Since Option A does not include all the wrong statements, it cannot be the correct answer.

Option B:
Option B selects only statement E as wrong and therefore overlooks statement D. It is true that E is incorrect because methodological rigour does not depend on whether research is basic or action oriented. However, because D is also a wrong statement, treating E as the sole incorrect statement makes this option invalid.

Option C:
Option C wrongly includes statement C in the list of incorrect statements. Statement C is actually true, as action research is typically undertaken by practitioners to improve their own practice. By treating a correct statement as wrong, this combination misclassifies the statements and therefore cannot be accepted.

Option D:
Option D correctly identifies D and E as the only wrong statements in the list. It omits statements A, B and C, all of which accurately characterise basic, applied and action research. Because it includes all and only the incorrect statements, this combination best answers the demand of the question to select the wrong statements.

Stratospheric ozone is depleted when chlorine and bromine atoms, released from certain man-made chemicals, catalyse reactions that destroy ozone molecules. Chlorofluorocarbons (CFCs), halons and some related halogenated compounds are particularly important sources of these atoms. They are stable in the lower atmosphere but break down under strong UV radiation in the stratosphere, releasing ozone-destroying radicals. Consequently, these substances are recognised as the main cause of the ozone hole, making option C correct.

Option A:
Option A is incorrect because sulphur dioxide and nitrogen oxides are more closely associated with acid rain and tropospheric pollution. They do not play the dominant role in stratospheric ozone depletion.

Option B:
Option B is incorrect since carbon dioxide and methane are key greenhouse gases driving climate change, but they do not directly cause the ozone hole. Climate change and ozone depletion are related but distinct problems.

Option C:
Option C is correct as CFCs and similar compounds were widely used in refrigeration, aerosols and foam blowing. Their regulation under the Montreal Protocol has led to gradual recovery of the ozone layer.

Option D:
Option D is incorrect because oxygen and nitrogen are natural components of the atmosphere and are essential in forming and maintaining the ozone layer. They are not pollutants responsible for its depletion.

Sustainable urban transport requires moving more people with fewer vehicles, lower emissions and less congestion. High-quality buses, metro systems and facilities for walking and cycling reduce dependence on private cars. They also improve access for low-income groups and cut energy use. Such strategies directly contribute to cleaner air and better quality of life.

Option A:
Option A is incorrect because prioritising private cars typically increases congestion, pollution and land use for parking.

Option B:
Option B is correct as it reflects key components of sustainable mobility: mass transit and non-motorised modes.

Option C:
Option C is incorrect since removing emission standards would seriously worsen air quality and public health.

Option D:
Option D is incorrect because unchecked diesel vehicles tend to raise particulate pollution and noise.

Each term is 4 consecutive letters in reverse. Starting letters Z(26), V(22), R(18), N(14) decrease by −4. Next start is J(10), so the reversed block is JIHG.

Option A:
Option A is correct because J is −4 from N and J,I,H,G are consecutive in reverse order.

Option B:
Option B starts at K (11), which is −3 from N, not −4.

Option C:
Option C starts at M (13), which is −1 from N, not −4.

Option D:
Option D moves forward to P and breaks the backward step rule.

Statements A, B, C and E describe recognised types and uses of non-probability sampling. Purposive sampling focuses on information-rich cases, convenience sampling uses easily available participants, quota sampling fills predetermined subgroup quotas without random selection and snowball sampling helps access hidden populations. Statement D is false because non-probability samples do not support precise calculation of sampling error. Hence the correct combination must include A, B, C and E and exclude D.

Option A:
Option A is incomplete because it omits E, overlooking the important role of snowball sampling for hard-to-reach groups such as marginalised communities or rare populations. Without E, the list of non-probability types is not fully representative.

Option B:
Option B is correct since it includes all true statements and excludes D, which wrongly promises precise sampling error estimates from non-probability designs. It reflects both the strengths and the limitations of such sampling methods.

Option C:
Option C contains B, C and E but omits A, so it ignores purposive sampling, which is a central non-probability technique in qualitative and exploratory research. Its absence makes the option incomplete.

Option D:
Option D includes A, C and E but excludes B, thereby disregarding convenience sampling, which is one of the most common non-probability methods in practice. Therefore this option cannot be the correct one.