The pathogens can be killed by_______________?
The pathogens can be killed by_______________?
A. nitrification
B. chlorination
C. oxidation
D. none of the above
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Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
Question: Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
[A].grit [B].
dust [C].
powder [D].
smoke Answer: Option A
Explanation:
No answer description available for this question.
Most of the bacteria in sewage are
Question: Most of the bacteria in sewage are
[A].parasitic [B].
saprophytic [C].
anerobic [D].
none of these Answer: Option B
Explanation:
No answer description available for this question.
Noise pollution level in a chemical plant is expressed in
Question: Noise pollution level in a chemical plant is expressed in
[A].roentgen [B].
decibel [C].
hertz [D].
none of these Answer: Option B
Explanation:
No answer description available for this question.
Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.
Question: Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels.
[A].3 [B].
30 [C].
70 [D].
100 Answer: Option A
Explanation:
No answer description available for this question.
In water treatment, alum[Al2(SO4)3] is used for the process of
Question: In water treatment, alum[Al2(SO4)3] is used for the process of
[A].filtration [B].
coagulation [C].
sedimentation [D].
disinfection Answer: Option B
Explanation:
No answer description available for this question.
As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)
Question: As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)
[A].10 [B].
90 [C].
800 [D].
750 Answer: Option B
Explanation:
No answer description available for this question.