Environmental Science and Engineering
GATE ES Air pollution PYQs
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Questions 11–12 of 12. Imported answers require independent review unless marked reviewed.
Question 37
Open questionESMSQ2 marksNeeds review
In air pollution, which of the following is/are classified as primary pollutants?
Your answerSelect all correct options. You can choose more than one.
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Open questionESNAT2 marksNeeds review
The concentration of NO₂ in the air at NTP is reported as 0.30 ppm (ppm by volume). The concentration of NO₂ in μg/m³ is ________ (rounded off to the nearest integer).
[At NTP, temperature = 298 K, pressure = 1 atm, and one mole of ideal gas occupies 24.45 L]
[Molecular weight of NO₂ = 46 g/mol]
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