EXAMIANS
Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.
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A man exposed to excessive noise level in the working environment may suffer from
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The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the
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'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the
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The common pollutant generated in chlor-alkali industry and battery manufacture is
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Iron & manganese present in the polluted water is removed by
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The widest explosive limit is of __________ , thereby making it the most explosive gas.
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Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
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Exposure to chemicals having carcinogenic properties cause
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In water chemical treatment plant, use of chloramines ensures
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