EXAMIANS
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
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Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels.
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In the context of the chemical process industries, the term BOD is normally associated with the
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Fresh domestic sewage is __________ in color.
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TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes
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Lagooning process is mainly a means of the
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BOD of raw municipal sewage may be in the range of about __________ mg/litre.
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Which of the following fine dust removal equipments is the most efficient?
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Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream?
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Which of the following processes is involved in the biochemical treatment of sewage effluents?
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