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Environmental Engineering - Section 1 (3)

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Environmental Engineering - Section 1

This is the branch of engineering and here in this section you
will find all the MCQs problems related to environmental engineering.

17. 

Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

A. inversely proportional to viscosity of gas.
B. proportional to the viscosity & density of the gas.
C. proportional to the pressure of the gas.
D. both (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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18. 

Which of the following dust collection equipments is the least efficient (for sub-micronic particles) ?

A. Dust catcher (gravity type)
B. Cyclone separator
C. Bag filter
D. Hollow wet scrubber

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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19. 

Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by

A. chlorination
B. treating in biological oxygen pond
C. chemical coagulation
D. none of these

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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20. 

The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by

A. biological oxygen pond.
B. aerated lagoons.
C. trickling filters.
D. gravity separator having oil skimming devices.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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21. 

Which of the following pollutants is not emitted during volcanic eruptions ?

A. SO2
B. H2S
C. CO
D. hydrocarbons

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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22. 

Siderosis is a disease caused by the inhalation of __________ dust.

A. coal
B. silica
C. iron
D. none of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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23. 

Presence of excess flourine in water causes

A. dental cavity
B. tooth decay
C. fluorosis
D. respiratory disease

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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24. 

Turbidity of water is an indication of the presence of

A. suspended inorganic matter
B. dissolved solids
C. floating solids
D. dissolved gases

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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