UGC NET Questions (Paper – 1)

Statement B is the only wrong statement because the urban heat island effect actually results in higher temperatures in city centres compared to rural surroundings. Statements A, C and D are correct as they reflect well-documented environmental issues and solutions related to urbanisation. Rapid unplanned urbanisation does produce slums and poor sanitation, transport emissions worsen air quality and proper planning can mitigate such impacts. Therefore, the combination that identifies B only as wrong is the correct answer.

Option A:
Option A is incorrect because it treats statement A as wrong, whereas A accurately describes the consequences of unplanned urban growth such as slums, congestion and poor sanitation. These are widely recognised in urban studies and environmental planning. Since A is a correct statement, calling it wrong makes this option invalid.

Option B:
Option B is correct because it singles out statement B, which misrepresents the urban heat island effect by stating that city centres become cooler than rural areas. In reality, built-up surfaces and reduced vegetation make cities warmer, so B is clearly incorrect. As A, C and D are all correct, identifying only B as wrong satisfies the requirement of the question.

Option C:
Option C is incorrect because it claims both A and B are wrong. While B is indeed wrong, A is correct since unplanned urbanisation is strongly associated with slums and inadequate infrastructure. By including a correct statement in the set of wrong statements, this option fails the logical condition of the question.

Option D:
Option D is incorrect because it asserts that both B and C are wrong. C is correct because vehicle and transport-related emissions are major sources of urban air pollution and greenhouse gases. Grouping a correct statement with B in the wrong set makes this combination unacceptable.

The Global Biofuel Alliance seeks to accelerate the development and deployment of sustainable biofuels by improving standards, trade and technology cooperation. It encourages higher blending of biofuels like ethanol in transport fuels to cut oil imports and greenhouse gas emissions. For countries like India, the alliance also links to better price realisation for farmers who supply feedstock, strengthening the people–environment–development nexus.

Option A:
This option is wrong because the alliance concerns biofuels, not coal production.

Option B:
This option correctly reflects the alliance’s intent to coordinate sustainable biofuel growth, address transport emissions and benefit agricultural stakeholders.

Option C:
A blanket ban on all bioenergy would conflict with the alliance’s purpose of promoting sustainable biofuels as part of the energy mix.

Option D:
The alliance is open to a wide range of countries, including developing ones; restricting technologies only to rich countries is contrary to its cooperative spirit.

Statements B and D are wrong, whereas A and C are correct. Industrial relocation by itself does not always eliminate urban air problems and can merely shift pollution elsewhere, and green belts alone cannot handle all complex sources of urban air pollution. Statements A and C correctly point to sustainable transport modes and emission standards as important strategies. Therefore, the combination that identifies B and D together as wrong statements is the correct answer.

Option A:
Option A is incorrect because it singles out only B as wrong and fails to recognise that D is also incorrect. Green belts can contribute to some air quality benefits but cannot single-handedly solve all urban pollution issues, so D must be included among wrong statements.

Option B:
Option B is incorrect because it selects only D as wrong and leaves out B, even though B is false. The notion that industrial relocation always solves urban air problems oversimplifies the issue and disregards cumulative and secondary pollutants.

Option C:
Option C is incorrect as it includes B, C and D as wrong statements. While B and D are wrong, C is correct since vehicle emission standards and inspection regimes are key tools used worldwide for exhaust control. Treating C as wrong contradicts standard air quality management practice.

Option D:
Option D is correct because it groups exactly the two incorrect statements B and D. It acknowledges the partial nature of relocation and green belts, and recognises that integrated strategies including A and C are necessary to address urban air quality.