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GATE CE 2019 Set 1 — Question 50

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NAT+2 / -0MediumAir Quality StandardsAir PollutionEnvironmental Engineering

Environmental Engineering → Air Pollution → Air Quality Standards

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Question

A sample of air analysed at 0∘C0^\circ\text{C} and 1 atm1\text{ atm} pressure is reported to contain 0.02 ppm0.02\text{ ppm} (parts per million) of NO2\text{NO}_2. Assume the gram molecular mass of NO2\text{NO}_2 as 4646 and its volume at 0∘C0^\circ\text{C} and 1 atm1\text{ atm} pressure as 22.4 litres per mole22.4\text{ litres per mole}. The equivalent NO2\text{NO}_2 concentration (in microgram per cubic meter, round off to 2 decimal places) would be ________
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