UGC NET Paper 1 — Environmental Science
887 questions across 12 years
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17 questions shown from 2020 in Pollution.
Contamination of aquatic environment by Polychlorinated Biphenyls (PCBs) can originate from I. Sewage effluent II. Waste incinerators III. Toxic dumps IV. Thermal power plants V. T...
Exposure to excessive noise pollution can cause: (i) Hearing impairment (ii) Insomnia (iii) Rise in blood pressure (iv) Respiratory disease (v) Reduced work efficiency
Given below are some metals which are released into environment from a variety of anthropogenic sources. Identify the metals which have been of serious concern from the point of vi...
Given below are two statements, one is labelled as Assertion A and other is labelled as Reason R. Assertion A: Lakes are less prone to getting polluted than rivers. Reason R: Water...
The most relevant effect of particulate matter in air on human health is:
Photochemical smog in urban areas is known to cause a) Respiratory effects b) Eye irritation c) Nose and throat irritation d) Carcinogenic effect e) Reduction in visibility Choose...
Which of the following statements about the Volatile Organic Compounds (VOCs) are correct? i) They cause acid rain ii) They may cause cancer iii) They play an important role in the...
The impact of noise pollution on human health is governed by: (i) Intensity of noise (ii) Duration of noise (iii) Socio-economic status of an individual (iv) Sensitivity of human e...
Identify the primary air pollutant among the following:
Given below are two statements: Statement I: Sunlight is a pre-requisite for the formation of photochemical smog in urban areas. Statement II: Photochemical smog is a recurring phe...
Given below are two statements Statement I: Volatile Organic Chemicals (VOCs) are contaminants more commonly found in groundwater than in surface water. Statement II: VOCs are one...
Given below are 2 Statements: Statement I: Long stretches of major rivers of India have very low Biochemical Oxygen Demand (BOD) values. Statement II: In rivers, oxygen is added in...
The Global emissions (by weight) of the following Primary pollutants from natural sources are maximum in case of
Noise pollution measured in decibels (dB) with reference to a standard sound intensity of the following magnitude
In a polluted urban area, which one of the following has the highest concentration (ppm) in photochemical smog?
Match List I and List II which contains water pollutants and sources respectively List I Water pollutants A. Oxygen Demanding Wastes B. Plant Nutrient C. Acids D. Polychlorinated b...
In case of which of the following primary pollutants, the man-made contributions to global emissions (million tonnes per year) is more compared to that from natural sources?