UGC NET Questions (Paper – 1)

A carbon footprint quantifies the total greenhouse gas emissions associated with an activity or entity. It expresses different greenhouse gases in a common unit of carbon dioxide equivalent. This helps compare and manage contributions to climate change. Therefore the description in the question clearly corresponds to a carbon footprint.

Option A:
Carbon footprint is specifically used to track how much climate forcing gases are emitted. It can be calculated for individuals,organisations,products or even countries. Because the definition in the stem mentions greenhouse gases and carbon dioxide equivalent,this term fits exactly.

Option B:
An ecological niche refers to the functional role and position a species occupies in an ecosystem. It has nothing to do with measuring greenhouse gas emissions. Hence it does not match the meaning described in the question.

Option C:
Energy budget generally denotes the balance between energy input and output in a system,such as a city or organism. While related to resource use,it is not a standard measure of greenhouse gas emissions. Therefore it is not the best answer here.

Option D:
Water footprint measures the amount of freshwater used to produce goods and services consumed by an individual or community. It focuses on water use,not greenhouse gas emissions. Thus it does not correspond to the definition given in the stem.

Statements A, B and C are correct: A defines carbon footprint, B defines ecological footprint and C notes their use as sustainability indicators. Statement D is incorrect because, although related, the two concepts are not identical; carbon footprint focuses on emissions whereas ecological footprint covers broader resource and land-use aspects. Option D includes D and omits B, so it is not the correct answer. The correct combination must include A, B and C only.

Option A:
Option A is correct because it includes the three true statements and excludes D. It distinguishes between the narrower emissions-focused carbon footprint and the broader land-demand-focused ecological footprint, while acknowledging their use in assessment. This aligns with the conceptual treatment of the indicators.

Option B:
Option B is incorrect as it leaves out B, which is essential for explaining ecological footprint, and thereby gives an incomplete picture.

Option C:
Option C is incorrect since it includes D, which wrongly treats the two indicators as identical and interchangeable. This ignores important conceptual differences between them.

Option D:
Option D is incorrect because it accepts D while omitting B. It fails to provide the proper definition of ecological footprint and conflates the two measures, making the combination unacceptable.

Statements A, B, C, D and F are correct because they describe major indices and note that indicators help inform but do not replace judgement. Statement E is false since choices about what to measure and how to weight indicators always involve normative decisions. Hence, the combination that includes all correct statements and excludes E is correct.

Option A:
Option A is correct as it captures different measurement tools and emphasises cautious policy use, while rejecting the notion that index construction is entirely free of value judgements.

Option B:
Option B is incorrect because it leaves out F and therefore fails to highlight that contextual interpretation is necessary to avoid mechanical use of indices.

Option C:
Option C is incorrect since it includes E, which wrongly claims that index design is purely objective, even though value choices are inherent in indicator selection.

Option D:
Option D is incorrect as it omits B, so it loses the definition of ecological footprint, which is one of the key indicators discussed in this unit.