Environmental Engineering Sheet 19
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1) Question.
The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is
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2) Question.
In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at . The BOD of raw sewage will be
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3) Question.
The ratio of 5 day BOD to ultimate BOD is about
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4) Question.
The rate of BOD exerted at any time is
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5) Question.
Sewerage system is usually designed for
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6) Question.
Average rate of water consumption per head per day as per Indian Standard is
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7) Question.
The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle is
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8) Question.
The suitable layout of distribution system for a city with roads of rectangular pattern is
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9) Question.
The layout of distribution system in which water flows towards the outer periphery is
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10) Question.
The suitable layout of a distribution system for irregularly growing town is
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11) Question.
The human excreta is a......waste.
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12) Question.
A sewer which receives sewage from the collection system and conducts it to a point of final disposal is called a -
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13) Question.
A sewer which receives storm water, surface run-off and sewage is called a -
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14) Question.
The quantity of liquid waste which flows in sewers during rainy season is called -
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15) Question.
The water from kitchens, bathrooms, wash basins is called -
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16) Question.
Garbage is a -
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17) Question.
For a city or town with roads of rectangular pattern, the type of layout used for the distribution of pipes is -
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18) Question.
The suitable layout of a distribution system for well planned cities is -
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19) Question.
Which of the following statement is wrong? -
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20) Question.
For an area developed in haphazard way, the type of layout used for the distribution of pipes is known as -
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