Environmental Engineering Sheet 15
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1) Question.
Which of the following treatments reduce salinity of water?
1. Flocculation and sedimentation
2. Filtration
3. Reverse osmosis
4. Electrodialysis
Select the correct answer using the codes given below
Codes:
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2) Question.
The acid rains are caused by the following pollutants:
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3) Question.
The rain is generally termed as acidic, if ph value of rain water falls below
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4) Question.
The depletion of ozone in the outer atmosphere may result in increased
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5) Question.
The specified standard for under US Ambient air quality standards is This is approximately equivalent to
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6) Question.
The spray tower can be used to control
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7) Question.
The specified standard under US Ambient Air Quality standards for , and CO respectively are
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8) Question.
Select the primary air pollutants among the following:
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9) Question.
The primary pollutant caused by incomeplete combustion of organic matter is
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10) Question.
Select the secondary air pullutants among the following:
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11) Question.
The most commonly used chemical for dechlorination of water is -
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12) Question.
The amount of chlorine used for plain chlorination of water is about -
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13) Question.
The process of dechlorination is followed by -
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14) Question.
The process of removing excess chlorine from water is called -
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15) Question.
When the chlorine is added beyond the break point, the process of treating the water is known as -
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16) Question.
The residual chlorine.......at the break point of chlorination.
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17) Question.
Th apparatus used for feeding chlorine into water is called -
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18) Question.
Crystalline hydrates of 'Ice' of chlorine are formed at a temperature of -
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19) Question.
To prevent the formation of crystalline hydrates of 'Ice' of chlorine, the chlorine supply cylinders are kept at a temperature from -
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20) Question.
Pre-chlorination -
Answer.
