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Question: H2S present in gaseous stream can be removed by adsorption on
[A].

silica gel

[B].

active carbon

[C].

bog iron

[D].

limestone powder

Answer: Option C

Explanation:

No answer description available for this question.

Question: Ethanolamine is an absorbant used for the removal of __________ from air/gas.
[A].

HF

[B].

SO2

[C].

H2S

[D].

both (b) & (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the
[A].

gravity settling chamber

[B].

cyclone separator

[C].

electrostatic precipitator

[D].

bag filter

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dust collection efficiency of a cyclone separator depends upon its
[A].

diameter.

[B].

inlet gas velocity.

[C].

overall height.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes
[A].

paralysis of muscles & loss of appetite.

[B].

nervous depression.

[C].

gastritis & diarrhea.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes
[A].

fading of dyes on textiles.

[B].

corrosion, tarnishing & soiling of metals.

[C].

reduced strength of textiles.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air.
[A].

hydrocarbons

[B].

hydrogen flouride

[C].

hydrogen sulphides

[D].

nitrogen dioxide

Answer: Option B

Explanation:

No answer description available for this question.

Question: Persons working in cement plants and limestone quarries are more prone to disease like
[A].

cancer

[B].

asthma

[C].

silicosis

[D].

flourosis (bone disease)

Answer: Option C

Explanation:

No answer description available for this question.