Chemical Environmental Engineering

Which of the following is an adsorbent used for the removal of SO2 from gas/air ?

Byadmin March 11, 2019August 29, 2021

Which of the following is an adsorbent used for the removal of SO2 from gas/air ?

A. Bog iron
B. Limestone powder or alkalised alumina
C. Silica gel
D. Active carbon

Chemical Environmental Engineering

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

A. CO
B. SO2
C. NOx
D. CFC (chloro fluoro carbons)

Read More Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?
Chemical Environmental Engineering

Beyond what concentration of H2S in air, acute danger to human life exists ?

Beyond what concentration of H2S in air, acute danger to human life exists ?

A. 50 ppm
B. 100 ppm
C. 300 ppm
D. 700 ppm

Read More Beyond what concentration of H2S in air, acute danger to human life exists ?
Chemical Environmental Engineering

Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?

Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?

A. Quenching of hot coke
B. Discharging in the river stream
C. Filtration and recycling for cooling coke oven gas
D. None of these

Read More Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by_________________?
Chemical Environmental Engineering

The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?

The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?

A. CO2
B. CH4
C. CO
D. H2

Read More The main type of sludge gas evolved during sewage treatment in Imhoff tank is___________________?
Chemical Environmental Engineering

The lowest layer of atmosphere is known as the_____________________?

The lowest layer of atmosphere is known as the_____________________?

A. Stratosphere
B. Troposphere
C. Ionosphere
D. None of these

Read More The lowest layer of atmosphere is known as the_____________________?
Chemical Environmental Engineering

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

A. 102
B. 105
C. 109
D. 1015

Read More CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

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