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 20°C. The BOD of raw sewage will be

Environmental Engineering
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 20°C. The BOD of raw sewage will be

200 ppm

300 ppm

400 ppm

100 ppm

200 ppm

300 ppm

400 ppm

100 ppm

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Environmental Engineering
The design discharge for the separate sewer system shall be taken as

6 × DWF

3 × DWF

2 × DWF

Equal to dry weather flow (DWF)

6 × DWF

3 × DWF

2 × DWF

Equal to dry weather flow (DWF)

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Environmental Engineering
As compared to geometrical increase method of forecasting population, arithmetical increase method gives

Higher value

Same value

Lesser value

Accurate value

Higher value

Same value

Lesser value

Accurate value

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Environmental Engineering
The polluted water is one which

Is safe and suitable for drinking and domestic use

Contains pathogenic bacteria

Is contaminated

Consists of undesirable substances rendering it unfit for drinking and domestic use

Is safe and suitable for drinking and domestic use

Contains pathogenic bacteria

Is contaminated

Consists of undesirable substances rendering it unfit for drinking and domestic use

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Environmental Engineering
The suitable layout of distribution system for a city with roads of rectangular pattern is

Ring system

Dead end system

Radial system

Grid iron system

Ring system

Dead end system

Radial system

Grid iron system

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Environmental Engineering
Scour valves are provided

At every summit of rising mains

At every depression and dead ends to drain out the waste water that may collect there

At street corners to control the flow of water

At the foot of rising main along the slope to prevent back running of water

At every summit of rising mains

At every depression and dead ends to drain out the waste water that may collect there

At street corners to control the flow of water

At the foot of rising main along the slope to prevent back running of water

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering

Environmental Engineering 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 20°C. The BOD of raw sewage will be

Environmental Engineering The design discharge for the separate sewer system shall be taken as

Environmental Engineering As compared to geometrical increase method of forecasting population, arithmetical increase method gives

Environmental Engineering The polluted water is one which

Environmental Engineering The suitable layout of distribution system for a city with roads of rectangular pattern is

Environmental Engineering Scour valves are provided

Environmental Engineering
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 20°C. The BOD of raw sewage will be

Environmental Engineering
The design discharge for the separate sewer system shall be taken as

Environmental Engineering
As compared to geometrical increase method of forecasting population, arithmetical increase method gives

Environmental Engineering
The polluted water is one which

Environmental Engineering
The suitable layout of distribution system for a city with roads of rectangular pattern is

Environmental Engineering
Scour valves are provided