Recent questions and answers in Gaseous Pollutants

Which ONE of the following options CORRECTLY matches the Criteria Air Pollutants with measurement methods used in Continuous Ambient Air Quality Monitoring Stations (CAAQ...

Which of the following options is/are CORRECT assumption(s) in the Gaussian plume dispersion model?The concentration of pollutants emitting from stack is continuous.The p...

The concentration of chemical $\text{A}$ in ambient air is $50 ~\mu \mathrm{~g} / \mathrm{m}^{3}$ and the toxicological index limit for a threshold health effect for this...

​​​​​Consider the following statements$P$: According to the National Ambient Air Quality Standards (Central Pollution Control Board, Govt. of India, notification $2009$),...

​​​At a pressure of $1$ atmosphere and temperature of $25^{\circ} \mathrm{C}$, $365 \mu \mathrm{~g} \mathrm{~m}{ }^{-3}$ of a pollutant corresponds to mixing ratio of $13...

Which is/are the secondary air pollutant(s)?$\mathrm{O}_{3}$$\mathrm{HNO}_{3}$$\mathrm{CO}_{2}$$\mathrm{H}_{2} \mathrm{SO}_{4}$

An industrial stack emits $100 \mathrm{~g} / \mathrm{s}$ of $\mathrm{CO}$ at an effective height of ' $\mathrm{H}$ ', where the wind speed is $5 \mathrm{~m} / \mathrm{s}$...

An industry with an effective stack height of $80 \mathrm{~m}$ emits $1200 \mathrm{~g} / \mathrm{h}$ of $\mathrm{CO}$. The windrose plotted using the meteorological data ...

A sample of air is collected in the morning at an ambient temperature of $\mathbf{2 5}{ }^{\circ} \mathbf{C}$. The concentration of carbon monoxide $\text{(CO)}$ in this ...

In air pollution, which of the following is/are classified as primary pollutants?Carbon monoxide $(\mathrm{CO})$Sulphur dioxide $\left(\mathrm{SO}_{2}\right)$Ozone $\left...

The concentration of $\mathrm{NO}_{2}$ in the air at $\mathrm{NTP}$ is reported as $0.30$ ppmv $\text{(ppm by volume)}$. The concentration of $\mathrm{NO}_{2} \mathrm{in}...

A ground level source emits $1000 \mathrm{~g}$ per day of $\mathrm{SO}_{2}$. In vicinity of the source, ambient temperature is measured at $10 \mathrm{~m}$ and $110 \math...