EXAMIANS
The pH value of oxidised sewage is about
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The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
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Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur?
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Which of the following acts as a natural source of air pollution?
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Reingleman chart is used for the evaluation of __________ pollution.
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Which of the following fine dust removal equipments is the most efficient?
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A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm.
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TLV of lead for public sewer/waste water is about __________ ppm.
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Maximum permissible turbidity in potable water is __________ ppm.
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Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.
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