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_______________?

Question: BOD of raw municipal sewage may be in the range of about __________ mg/litre.
[A].

1-2

[B].

5-10

[C].

150-300

[D].

2000-3000

Answer: Option C

Explanation:

No answer description available for this question.

Question: Main pollutants released from petroleum refineries is
[A].

CO, SO2 & H2S.

[B].

CO2, NO & SO3.

[C].

CO2, H2S & NO2.

[D].

SO3, NO2 & CO2.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In large thermal power stations very fine particulates present in flue gas are removed by
[A].

wet scrubber

[B].

bag filter

[C].

electrostatic precipitators

[D].

dust catcher

Answer: Option C

Explanation:

No answer description available for this question.

Question: H2S present in gaseous stream can be removed by adsorption on
[A].

silica gel

[B].

active carbon

[C].

bog iron

[D].

limestone powder

Answer: Option C

Explanation:

No answer description available for this question.