UGC NET Questions (Paper – 1)

Statements A, B, D, E and F are correct on emissions, biodiversity loss, human causes, smoke impacts and prevention/control. Statement C is false because prescribed burning is used in some contexts to reduce fuel loads and manage ecosystems. Therefore, the correct set is A, B, D, E and F only.

Option A:
Option A is correct because it includes all true statements and excludes C, which wrongly claims prescribed burning is never used.

Option B:
Option B is incorrect because it includes C (false).

Option C:
Option C is incorrect because it includes C (false) and omits A (true), mixing errors and omissions.

Option D:
Option D is incorrect because it omits B, underrepresenting biodiversity/ecosystem degradation impacts of frequent uncontrolled fires.

Statements A, B, C, E and F are correct and show technical, economic, behavioural and policy aspects of efficiency. Statement D is false because energy efficiency supports energy security by reducing demand and contributes to sustainable development by lowering environmental impacts. Hence, the correct combination is A, B, C, E and F only.

Option A:
Option A is correct because it includes all true statements and excludes D, which wrongly dismisses efficiency’s role in energy security and sustainability.

Option B:
Option B is incorrect because it omits E and F, missing behavioural and policy tools that help realise efficiency gains in practice.

Option C:
Option C is incorrect since it includes D (false) and omits A, losing the basic definitional statement of efficiency.

Option D:
Option D is incorrect because it omits B, so it underrepresents emissions benefits of efficiency when power is fossil-fuel based.