The true statement about 'green house effect' is that it is
A) caused by combination of many gases
B) caused by CO2
C) caused only by CO2, CFC, CH4 and NO2 gases
D) None of these
Correct Answer:
Verified
Q3: All are particulate pollutants except
A)dust
B)ozone
C)soot
D)smoke
Q4: Fine organic or inorganic particles suspended in
Q5: Which of the following is a secondary
Q6: Air pollution can be of
A)natural origin
B)artificial or
Q7: Mobile combustion accounts
A)10-20% of air pollution
B)40-50% of
Q9: The supersonic jets cause pollution by the
Q10: Carbon mono oxide is a pollutant because
A)it
Q11: A population is a group of
A)individuals in
Q12: What is the most important factor for
Q13: The formula for exponential population growth is
A)dN/dt
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