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Deaeration of high pressure boiler feed water is done to reduce

CHEMICAL ENGINEERING, Environmental Engineering /
Question: Deaeration of high pressure boiler feed water is done to reduce
[A].

foaming from boilers.

[B].

its dissolved oxygen content.

[C].

its silica content.

[D].

caustic embrittlement.

Answer: Option B

Explanation:

No answer description available for this question.

Deaeration of high pressure boiler feed water is done to reduce Read More »

CHEMICAL ENGINEERING, Environmental Engineering

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in

CHEMICAL ENGINEERING, Environmental Engineering /
Question: Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in
[A].

food industry.

[B].

municipal sewage treatment.

[C].

petroleum refinery.

[D].

iron & steel plant.

Answer: Option A

Explanation:

No answer description available for this question.

Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in Read More »

CHEMICAL ENGINEERING, Environmental Engineering

Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of

CHEMICAL ENGINEERING, Environmental Engineering /
Question: Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of
[A].

ozone and iodine.

[B].

chlorine or its compounds.

[C].

ultraviolet light for irradiation of water.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of Read More »

CHEMICAL ENGINEERING, Environmental Engineering

Murderers, gangsters and crooks referred to in the passage given above

Comprehension, Verbal Ability /
Question: Murderers, gangsters and crooks referred to in the passage given above
[A].

always manage to get away

[B].

are often glorified in detective stories

[C].

are wiser than their victims

[D].

know how to escape from law

Answer: Option B

Explanation:

No answer description available for this question.

Murderers, gangsters and crooks referred to in the passage given above Read More »

Comprehension, Verbal Ability

Corrosion in boilers can be prevented by

CHEMICAL ENGINEERING, Environmental Engineering /
Question: Corrosion in boilers can be prevented by
[A].

deaeration of feed water.

[B].

enhancing pH of feed water by adding alkali.

[C].

feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Corrosion in boilers can be prevented by Read More »

CHEMICAL ENGINEERING, Environmental Engineering

Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.

CHEMICAL ENGINEERING, Environmental Engineering /
Question: Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.
[A].

turbidity

[B].

color (Hazen)

[C].

total solids

[D].

all (a), (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water. Read More »

CHEMICAL ENGINEERING, Environmental Engineering