List of top Environmental Management Questions

Which waste management option is most effective for reducing greenhouse gas emissions from organic solid waste?
Which pollutant is mainly responsible for thermal inversion-related smog episodes in urban areas?
Minamata disease is caused due to long-term exposure to
Which pollutant reduces atmospheric visibility by light scattering, contributing to haze formation?
Which gas is primarily responsible for the corrosion of metals and monuments in polluted urban environments?
Which long-term environmental effect is most strongly linked to excessive phosphorus discharge into water bodies?
Which factor primarily controls the volatilization of organic pollutants from soil and water surfaces?
Which gas contributes most to the natural greenhouse effect?
Temporary hardness of water is mainly caused by the presence of
A water sample shows high COD but relatively low BOD. This indicates the presence of
Which of the following is a secondary air pollutant?
Excessive use of nitrogenous fertilizers in soil can directly lead to
Which process in the hydrologic cycle directly contributes to groundwater recharge?
Which greenhouse gas has very high heat-trapping ability per molecule, but is present in the smallest amount in the atmosphere?
Sludge bulking in an activated sludge process is mainly due to
The tropopause is characterized by
A high Sludge Volume Index (SVI) in an Activated Sludge Process (ASP) indicates
Sloughing in trickling filters usually results in
High concentration of nitrates (\(\gt 45\ \mathrm{mg/L}\)) in drinking water causes
In water and wastewater analysis, Kjeldahl nitrogen (TKN) represents the sum of
The maximum permissible concentration of fluoride in drinking water is
The unit of coefficient of permeability is
Arrange the following devices in increasing order of particulate collection efficiency for fine particles: \[ \begin{aligned} A.&\ \text{Gravity settling chamber}\\ B.&\ \text{Cyclone separator}\\ C.&\ \text{Electrostatic precipitator} \end{aligned} \]
For the removal of sub-micron particulate matter (\(\lt 1~\mu\mathrm{m}\)) from flue gases, which of the following devices generally provides the highest collection efficiency?
The turbidity of raw water entering a sedimentation tank is \(120\) NTU. After sedimentation, the turbidity is reduced to \(30\) NTU. What is the turbidity removal efficiency of the sedimentation process?