WHO Report - Global Urban Ambient Air Pollution Database (Update 2016) and Related Issues

1) According to the report, which is the most polluted city in the world?

a) New Delhi, India
b) Shanghai, China
c) Zabol, Iran
d) None of the above

2) According to the report, which is the most polluted city in India?

a) Gwalior
b) New Delhi
c) Allahabad
d) Raipur

3) Arrange the following cities in India in descending order of their fine particulate (PM 2.5) matter pollution ?

i) New Delhi
ii) Gwalior
iii) Allahabad
iv) Patna
v) Raipur

a) i, ii, iii, iv, v
b) ii, iii, iv, v, i
c) iv, iii, ii, i, v
d) i, iii, ii, iv, v

4) PM 2.5 refers to which of the following statements ?

a) Atmospheric particulate matter having diameter less than 2.5 micrometers.
b) Atmospheric pollutant matter having diameter less than 2.5 micrometers.
c) Atmospheric particulate matter having diameter more than 2.5 micrometers.
d) Atmospheric pollutant matter having diameter equal  to 2.5 micrometers.

5) Which of the following does not have the propensity to cause pollution in the atmosphere?

i) Particulate matter
ii) Nitrogen oxide
iii) Ozone
iv) Benzene

a) ii and iv only
b) i and ii only
c) iii and iv only
d) All four have the propensity to cause pollution

6) According to the Central Pollution Control Board (CPCB)  which of the following meteorological factors affects the quality of air?

a) Wind Speed
b) Temperature and Humidity
c) Solar Radiation
d) Mixed height of pollutants.
e) All of the above

Answers :

1) c
2) a, New Delhi ranks 11th while Gwalior ranks 2nd, Allahabad ranks third, Patna ranks 6th and Raipur ranks 7th.
3) b
4) a
5) d
6) e

Note: The report is based on data taken in the year 2013. The report indicates the level of PM 2.5 in 3000 urban areas across 103 countries.