If the sewage contains grease and fatty oils, these are removed in_________________?

Question: __________ is removed from water by lime-soda process.
[A].

Foul smell and taste

[B].

Iron and manganese

[C].

Temporary hardness

[D].

Permanent hardness

Answer: Option C

Explanation:

No answer description available for this question.

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.

Question: Operating principle of cyclone separator is based on the action of __________ dust particles.
[A].

diffusion of

[B].

centrifugal force on

[C].

gravitational force on

[D].

electrostatic force on

Answer: Option B

Explanation:

No answer description available for this question.

Question: Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid ilow control. It is caused due to
[A].

Reynold stresses

[B].

shear forces

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Question: A ‘body’ which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
[A].

global warming

[B].

green house

[C].

atmospheric effect

[D].

ionosphere

Answer: Option B

Explanation:

No answer description available for this question.