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

100 ppm

400 ppm

200 ppm

300 ppm

100 ppm

400 ppm

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally

More and more

Less and more

More and less

Less and less

More and more

Less and more

More and less

Less and less

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is

Scour valve

Safety valve

Sluice valve

Check valve

Scour valve

Safety valve

Sluice valve

Check valve

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
The devices which are installed for drawing water from the sources are called

Intakes

Aquiclude

Filters

Aquifers

Intakes

Aquiclude

Filters

Aquifers

ANSWER DOWNLOAD EXAMIANS APP

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

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(ii) and (iv)

ANSWER DOWNLOAD EXAMIANS APP

Environmental Engineering
As compared to cast iron pipes, steel pipes are

Costlier

Stronger

Heavier

Less susceptible to corrosion

Costlier

Stronger

Heavier

Less susceptible to corrosion

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 detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally

Environmental Engineering The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is

Environmental Engineering The devices which are installed for drawing water from the sources are called

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

Environmental Engineering As compared to cast iron pipes, steel pipes are

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 detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally

Environmental Engineering
The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is

Environmental Engineering
The devices which are installed for drawing water from the sources are called

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

Environmental Engineering
As compared to cast iron pipes, steel pipes are