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The densest of all the atmosphere layers is______: Troposphere
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All are particulate pollutants except______: Ozone
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Which of the following is a secondary pollutant? O3
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The supersonic jets cause pollution by the thinning of______: O3 layer
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Carbon monoxide is a pollutant because______: It reacts with haemoglobin
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Which material accounts for the greatest percentage of the weight of solid waste? Paper
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Typical modern municipal landfills contain which of the following? Monitoring wells, Impermeable barriers, Methane retrieval systems
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Pollutants resulting from human activities are mainly discharged in______: Overpopulated cities, Industrial centers
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Atmospheric pollution may be caused by______: Forest fire, Organic decay, Automobile exhausts
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Example of primary pollutants is______: Smog, O3, PAN
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Oxidation of sulfur in the fossil fuels mainly produces______: SO3, SO2
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Carbon dioxide content in atmosphere is______: 0.03%
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The polluting strength of sewage is usually characterized by its______: BOD
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Which of the following on inhalation dissolved in the blood hemoglobin more rapidly than oxygen? Carbon monoxide
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Smog is______: A combination of smoke and fog
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The major photochemical oxidant is______: Ozone
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Which of the following are likely to be present in photochemical smog? Sulphur dioxide, Photochemical oxidants, Volatile organic compounds
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Which of the following devices is suitable for the removal of gaseous pollutants? Cycloe separator, Electrostatic precipitator, Baghouse filter
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Which of the following air pollution control devices is suitable for the removing of the finest dust from the air? Fabric filter or baghouse
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Biochemical Oxygen Demand (BOD) measures______: Dissolved O2 needed by microbes to decompose organic waste
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Fluoride pollution mainly affects______: Teeth
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Which of the following is a non-point source of water pollution? Urban and suburban lands
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Disease caused by eating fish inhabiting mercury contaminated water is______: Mina-mata
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Which of the following is not a marine pollutant? Dissolved oxygen
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Noise is______: Unwanted sound
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Sound becomes hazardous noise pollution at ______ decibels: Above 80
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Which of the following is a major source of thermal pollution in water bodies? Thermal power plant
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The highest heating value is of______: Industrial waste
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Which of the following is a likely characteristic of hazardous waste? Ignitability, Corrosivity, Reactivity
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High level radioactive waste can be managed in which of the following ways? Deep well injection
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Biomedical waste may be disposed of by______: Incineration, Autoclaving, Deep burial
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Which of the following is a biodegradable organic chemical substance? Oils
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What is the harm from the depletion of Earth’s ozone layer? Increased amount of ulta violet radiation will reach earth’s surface