A. Carbon monoxide
B. Carbon dioxide
C. Nitrogen dioxide
D. Sulfur dioxide
E. Methane
Choose the correct answer from the options given below :
The correct answer is Option 1 – A, C & D.
Explanation:
In India, the Air Quality Index (AQI) is calculated based on specific key air pollutants identified by the Central Pollution Control Board (CPCB). These include:
Carbon monoxide (CO) → Included ✔️
Nitrogen dioxide (NO₂) → Included ✔️
Sulfur dioxide (SO₂) → Included ✔️
Why others are incorrect:
Carbon dioxide (CO₂) → Not used in AQI calculation (it is a greenhouse gas, not a direct air pollutant for AQI)
Methane (CH₄) → Not included in AQI
So, the correct set is A, C, and D only.
Important Questions from Environmental Pollution and Control
A 500 MW coal based power station is operating at an efficiency of 30%. If the coal has 1% of sulphur content and 1 tonne of coal produces 8000 kWh energy, how much SO2 will be emitted daily by the plant?
Name the low heat thermal process that destroys the pathogen in biomedical waste by heating that occurs inside the waste material.
Arrange the following functional elements of solid waste management in the order in which they appear :
(i) On-site handling, storage and processing
(ii) Collection
(iii) Process recovery
(iv) Transfer and transport
Choose the correct answer from the code given below :
The dominant mechanism(s) of deposition of aerosol particles in the size range 5 -10 μm in the respiratory tract are
(i) Sedimentation
(ii) Impaction
(iii) Diffusion
Choose the correct answer from the code given below :
A tributary flowing at a rate of 4 m3/s converges into a river flowing at a rate of 8.0 m3/s. The concentration of a pollutant 'X' at the upstream of the tributary before convergence was 12 mg/L and that of the river was 30 mg/L. If the pollutant X is completely mixed in the downstream, what would be its concentration?
