In water treatment, rapid gravity filters are adopted to remove_______________?

Byadmin January 17, 2019June 4, 2021

In water treatment, rapid gravity filters are adopted to remove_______________?

A. dissolved organic substances
B. dissolved solids and dissolved gases
C. floating solids and dissolved inorganic solids
D. bacteria and colloidal solids(Correct)

Environmental Engineering

Most of the bacteria in sewage are______________?

Most of the bacteria in sewage are______________?

A. parasitic
B. saprophytic(Correct)
C. pathogenic
D. anaerobic

Read More Most of the bacteria in sewage are______________?
CHEMICAL ENGINEERING | Environmental Engineering

Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.

Question: Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.
[A].
reduce SO2 content in
[B].
catalytically convert SO2 to SO3 in
[C].
increase the dew point of
[D].
none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Limestone powder is injected during pulverised coal burning in boilers to __________ the flue gases.
Environmental Engineering

Disinfection of water results in______________?

Disinfection of water results in______________?

A. removal of turbidity
B. removal of hardness
C. killing of disease bacteria
D. complete sterilisation

Read More Disinfection of water results in______________?
CHEMICAL ENGINEERING | Environmental Engineering

Ozone is

Question: Ozone is
[A].
a primary pollutant.
[B].
a secondary pollutant.
[C].
impervious to ultra-violet rays.
[D].
both (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Environmental Engineering

Lagooning process is mainly a means of the

Question: Lagooning process is mainly a means of the
[A].
sludge disposal.
[B].
reduction of excessive flow in sewers.
[C].
biological treatment of wastes.
[D].
none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Lagooning process is mainly a means of the
Environmental Engineering

In chlorination, with the rise in temperature of water, death rate of bacteria____________?

In chlorination, with the rise in temperature of water, death rate of bacteria____________?

A. increases(Correct)
B. decreases
C. remains unaffected
D. none of the above

Read More In chlorination, with the rise in temperature of water, death rate of bacteria____________?

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