UGC NET Questions (Paper – 1)

Statements A, B, C, D and F are correct as they show health impacts, sensitive-zone regulation, sources of noise and technical or planning measures for control. Statement E is false because chronic noise exposure is associated with cardiovascular effects such as hypertension. Therefore, the combination that includes A, B, C, D and F and excludes E is correct.

Option A:
Option A is incorrect because it omits F and so ignores practical approaches to noise control such as silencers, design and enforcement, even though those are essential for mitigation.

Option B:
Option B is incorrect since it leaves out D, underplaying the importance of traffic, construction and industry as major noise sources in urban environments.

Option C:
Option C is incorrect as it omits A, thereby failing to acknowledge the direct hearing damage that can result from high noise exposure, which is a primary concern in noise pollution.

Option D:
Option D is correct because it assembles all true statements about impacts, sources, regulatory tools and control measures, while rejecting the claim that cardiovascular effects are absent.

The auditory system,which includes the ear and related neural pathways,is directly affected by continuous exposure to high noise levels. Such exposure can lead to temporary or permanent hearing loss,tinnitus and other auditory disorders. The stem explicitly mentions damage from environmental noise,so the auditory system is the correct answer. Therefore Option C is appropriate.

Option A:
Digestive problems can sometimes be indirectly influenced by stress but are not the primary health outcome of noise exposure. The main clinical concern with noise pollution is hearing impairment rather than digestive system disorders,so Option A is not accurate here.

Option B:
The skeletal system involves bones and joints and is generally not affected by noise levels in the environment. Noise does not directly weaken or damage bones,so this option does not match the primary impact described in the question.

Option C:
The auditory system is highly sensitive to sound pressure levels and duration of exposure. Occupational and urban noise regulations are designed specifically to protect this system from long term damage. This explanation fits the content of the stem.

Option D:
The reproductive system is not directly harmed by typical environmental noise levels,although extreme stress can influence many body systems. However,this is not the main issue addressed in noise pollution studies,so Option D is not the best choice.

Statement C is the only wrong statement because noise control is not limited to personal protective devices; it also includes engineering controls, planning measures and legal regulations. Statements A, B and D are correct: A highlights health effects, B recognises noise as environmental pollution and D lists valid control strategies. Therefore, the combination that identifies C only as wrong is the correct answer.

Option A:
Option A is correct since it accurately singles out C as the wrong statement and leaves A, B and D recognised as true. It reflects the comprehensive approach to noise management that extends beyond individual protection. Thus it matches the requirement of selecting the wrong statement(s).

Option B:
Option B is incorrect because it treats both A and C as wrong. Statement A correctly describes adverse health impacts of chronic noise exposure, such as hearing loss and stress-related problems. Including a correct statement in the wrong set makes this option invalid.

Option C:
Option C is incorrect as it groups C and D together as wrong statements. While C is indeed wrong, D is correct in giving examples of zoning, silencers and time restrictions that are widely used in noise regulation. This mixture of one true and one false statement cannot be accepted.

Option D:
Option D is incorrect because it sees B and C as wrong. B is a correct statement since noise is widely recognised as environmental pollution affecting well-being. Treating B as wrong undermines standard environmental health knowledge.

Chronic exposure to loud noise can damage the delicate structures of the inner ear, leading to partial or permanent hearing loss. It can also trigger physiological stress responses, elevate blood pressure and interfere with normal sleep patterns and cognitive performance. These combined effects make noise pollution a serious public health issue, particularly in urban and occupational settings.

Option A:
Option A is incorrect because long-term noise exposure tends to reduce concentration and disturb sleep rather than improve them.

Option B:
Option B is correct because it lists well-documented health impacts of noise, including hearing impairment, stress and sleep disturbances.

Option C:
Option C is incorrect because high noise levels often hinder clear communication and may lead to social irritation or conflict instead of enhancing interaction.

Option D:
Option D is incorrect since noise exposure does not confer immunity from cardiovascular diseases; in fact, it is associated with increased cardiovascular risk through stress mechanisms.