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ENVIRONMENTAL ENGINEERING IN CE QUIZ

Permissible safe limit (TLV) of __________ toxic gas is 100-1000 parts per million (ppm).

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The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?

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Carcinogenic air pollutants cause

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Color test of water is done with an instrument called

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The Killer gas which caused Bhopal gas tragedy in 1984 was

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Main pollutants released from iron & steel industry is

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Tri-sodium phosphate is used in boiler water treatment to reduce

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As compared to rapid sand filters, slow sand filters give<br/>(i) Slower filtration rate<br/>(ii) Higher filtration rate<br/>(iii) Lesser efficiency in removal of bacteria<br/>(iv) Higher efficiency in removal of bacteria<br/>The correct answer is

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Which of the following is not a source of ozone emission in the atmosphere?

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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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