Any unwanted and undesirable change in the environment that affects the atmosphere and disturbs the ecosystem is called………..
a) temperature
b) pollution
c) noise
d) all of these
Pollution began to be recognized as
a series threat during the industrial revolution of the…
a) 17th century
b) 18th century
c) 19th century
d) 20th century
During which type of pollution, harmful pollutants are released into the air?
a) air pollution
b) land pollution
c) water pollution
d) noise pollution
Which of the following are the main air pollutants?
a) SO2, CO
b) NO and NO2
c) CFCs
d) all of these
Which one of the following is the type of primary pollution? NTS PST 24/11/2019 (8:30)
a) NO3
b) NO
c) SO3
d) HNO3
Which of the following is/are the cause of breakdown of ozone layer?
NTS PST 15/12/2019 (8:30) PST ---P-1----18L
a) SO2, CO
b) NO and NO2
c) CFCs
d) none of these
